Through his combination with Detective Ichijo, Yusuke Godai a.k.a. Kuuga is victorious over the Unidentified Lifeform #5, Zu-Mebio-Da.

In the battle against Unidentified Lifeform #6, Zu-Batsu-Ba, who had been appearing frequently in the Suginami ward, Kuuga's body changed from red to blue...

It's March 25th. For the sake of a promise, Yusuke heads to his old elementary school.

Kuuga winds up in a dire situation after taking the fierce attacks of Unidentified Lifeform #22, the rhino-type monster Zu-Zain-Da.

On a refreshing, cloudless day, Yusuke is practicing his 1808th technique, Stomp.

Recently Yusuke has noticed a shocking sensation like an electric current rippling inside his body while he fights Unidentified Lifeforms, and to solve this mystery he asks Sakurako to decipher more inscriptions

In the face off with Unidentified Lifeform #36, praying mantis-type monster Me-Garima-Ba, Kuuga fights with the TryGoram but its knockout attack doesn't work on Me-Garima-Ba.

During a discussion between Yusuke, Ichijo and Tsubaki, they confirm that Kuuga's golden power is produced by the magical artifact inside Yusuke's body, the Amadam, in response to his intent to want to become stronger.

Kuuga falls before the powerful enemy shark-type monster Go-Gamego-Re and Yusuke is taken to Tsubaki's side.

Ichijo is injured by the woman with a rose tattoo and taken to Kanto Medical University. Thinking he has to do his best on Ichijo's behalf as well, Yusuke ruminates on the rules of Unidentified Lifeform #43 Go-Zazaru-Ba's game.

Unidentified Lifeform #43 Go-Zazaru-Ba continues the murder game within the city and Unidentified Lifeform #3 Zu-Gooma-Gu rampages in Chiba prefecture.

Agito turns on G3 after defeating Pantheras Albus and Pantheras Tristis, damaging the G3's suit severely. The police have no choice but to label Agito dangerous.

Shoichi Tsugami comes to grips with his situation and declares that he must "protect the place where he belongs".

Ryo Ashihara finally awakens from his critical state to quit the swim team and go rogue.

The O-Parts lab finally unwound the ancient puzzle, revealing a mysterious DNA model, and they try to replicate the DNA.

Shoichi Tsugami decides to leave home after being seen transforming into Agito by Mana Kazaya.

Ryo Ashihara's swim coach tracks down his star swimmer and Ryo decides to "show him everything".

The OverLord has fully matured and vanishes, leaving a frightened Gills wondering why he should be so scared.

Toru Hojo has succeeded in becoming the G3-System operator and is out to prove that he can not only defeat the Unknowns but capture Agito.

Shoichi Tsugami bumps into someone who says she knowns who he is, but she seems to be hiding something dangerous.

Shoichi Tsugami has been taken into questioning for the murder of the woman he was suppose to meet, Tomoko Miura. In order to prove his innocence Mana Kazaya must use her psychic abilities to find the true culprit.

Ryo Ashihara learns about his father's death, who up until now has been missing.

The octopus Unknown, Mollipes Octipes, that melted after the battle with Toru Hojo, comes back to finish the job.

With the help of The OverLord Shouichi defeats the scorpion Unknown and lives to see another day.

Toru Hojo has received permission to capture Agito, but not to the extreme measures he wanted.

Taichi falls ill and a woman claiming to be a housekeeper, hired by Professor Misugi for while he is away, treats him back to health.

The Misugi household's new housekeeper, Aki Sakaki, is confronted by Ryo Ashihara because her name is in his father's notebook. Unfortunately for Ryo she claims she knows nothing, but he doesn't believe her and follows her.

After becoming closer to Shouichi and Taichi, Aki becomes the target of an Unknown... and Mana's wrath.

Ryo Ashihara is ever persistent and keeps pushing Aki Sakaki about what happened to his father on the Akatsuki-go.

Mana still believes that Aki is not Shouichi's girlfriend but despite her wishes Shouichi becomes enticed with the idea of having a girlfirend, even if he can't remember her.

Toru Hojo puts his team in place to capture Agito, but will it be enough?

After going berserk, destroying the V-1 system and the second bee Unknown, and then attacking Agito, Makoto Hikawa faints in the G3-X system. He is hospitalized and comes to the realization that while the G3-X system is perfect, he has many flaws. Makoto turns to the only other person he sees as a suitable candidate for the G3-X, Shoichi Tsugami.

Makoto Hikawa takes full responsibility for going berserk after seeing Shoichi Tsugami effectively deal with an Unknown in the G3-X suit. The police cheifs recognize this and decide to have Toru Hojo operate the G3-X once the V-1 system is disbanded.

Sumiko Ozawa must come to grips that her G3-X system is too perfect and too smart and in order for Makoto to operate it she must make it flawed.

Ryo Ashihara is fully healed and looks for revenge against Agito.

Toru Hojo decides to take Nobuyuki Kazaya's murder case saying that it wasn't an Unknown that killed him but a human with telekinetic powers.

Tetsuya Sawaki, going against the OverLord's principles, tries to revive Ryo Ashihara using a super powered human. Unfortunately, the man who killed him, Katsuhiko Sagara, is not powerful enough to do it.

After attacking the tennis team at the fireworks display Mana believes that she unknowingly killed her father. Mana tries to distance herself from the people she loves and gets kidnapped by Katsuhiko Sagara, who hopes that she can make a future safe for people with supernatural powers.

Mana, under the guidance of Tetsuya Sawaki, starts the process of reviving Ryo Ashihara and it seems to have a backlash on her body.

Shouichi tries to reach out to Mana who's run away from home, showing her that she's not alone in trying to find "the place where they belong".

Shouichi, fighting for himself, transforms into Agito Burning form and defeats the mantis Unknown and the El of Water. The El of Water, in a last ditch effort, retreats into the OverLord's body and vows vengeance against Agito. Shouichi regains his self-esteem and rejoins the Misugi household.

Ryo Ashihara witnesses someone being attacked by an Unknown and goes to save her, he encounters a strange man in black named Kaoru Kino.

Kaoru Kino saves Ryo Ashihara and Koji Majima from an Unknown. He tells Ryo that his sole purpose in life is to save people, either as a doctor or as Agito. But can this man, haunted by his past, really be trusted?

Makoto Hikawa finally figures out that the Unknown are targeting the people that he once rescued but doesn't know why.

Agito unleashes his Shining Form and combines his strength with the other Riders and defeats the El of Water. The OverLord of Darkness realizes that Agito's power has become too strong and he must deal with the Riders directly to save his beloved humans.

After Kaoru Kino's seed of Agito is stolen from him the OverLord of Darkness turns his sights on Ryo Ashihara, looking to take Gills' power.

Shoichi Tsugami and Mana Kazaya go to Toru Hojo for answers about Mana's father's murder but is the truth they uncover more than they can handle?

After being beaten by the El of the Wind, Ryo Ashihara and Shoichi Tsugami are nursed back to health by the two girls they helped.

As the Scorpio constellation continues to shift more and more people who were born under the constellation commit suicide. Makoto Hikawa believes that they die after seeing their doppelgänger.

The G3 and G3-X have been dispatched for the purpose of protecting Unknowns. The police believe that a race of Agitos will one day overthrow humanity so why not have the Unknowns kill them before it happens.

With people killing themselves because of the OverLord and two Els killing people with the Seed of Agito the Kamen Riders must unite their strengths to save humanity from extinction.

Shinji investigates an antiques shop where Reiko was attacked by a mysterious person when she investigates the mystery of antique shop owner's disappearance. In order to meet a mysterious person, Shinji gave mysterious person a name card, without realizing that Shinji's action had putting Yui's life in danger.

As Ren tries to close in on the antique store murderer, Shinji unknowingly gives Kamen Rider Scissors the fuel for gaining an edge in the Rider Fight.

Shinji pursues Ren after he loses his memory while Yui returns to her brother's university in an attempt to locate his whereabouts. In the meantime, Reiko is investigating the mysterious disappearances of several passengers on a train.

Ren's past comes to light as both he and Yui return to Shiro's last known whereabouts and the birthplace of Kamen Rider Knight, as well as Eri's fate following the secret experiment's aftermath. When Yui finds nearly dead Professor Ejima in the Room 401, he blames Yui for causing a disaster before he dies.

With Ren doubting his ability to go through killing other Kamen Riders, Shinji and Miyuki contemplate his possible paths and the potential doom that he faces. As Sanako decided to go out for her 'secret association meeting', Yui continues to investigate the truth behind the secret experiments her brother conducted. Meanwhile, Shuichi attempts to release a prisoner.

Imprisoned criminal Takeshi Asakura is approached by Shiro in joining the Rider Fight to grudge against lawyer Shuichi Kitaoka who refuses to release him. Meanwhile, after Yui saw Eri's terrible condition in the hospital, she blames herself for causing this disaster. With the breaking news of Takeshi's sudden jailbreak spreading across the nation, Shinji ride into his action as a journalist for the first time.

Shinji becomes trapped with Takeshi as he holds hostages in order to gain a battle with his former lawyer Shuichi. Meanwhile, in Atori, Jun invites Ren and Miyuki to participate in a game that gathers all Riders together in the Mirror World for one big battle, only to realize that the game he held has backfired on himself.

Reiko tracks down and investigates Takeshi in order to find out the truth behind his aggressive, vexed behavior, only to discover that Takeshi had a long-lost brother who still lives. Following Miyuki's death, Shinji blames himself for letting Miyuki die in Takeshi's hands. Disgusted by her brother's reckless action, Yui decides to revisit the old mansion, urging Shiro to stop the Rider War. While Ren, Shinji and Shuichi battle against Mirror Monsters, they discover that the Contract Monsters they owned suddenly disappeared, when Shiro appears telling them that the Rider War is over.

Shinji and Ren are forced to track down Yui as she confronts her brother about her connection to the Rider War and their childhood memories. Reiko tries to find Takeshi's younger brother, believing that will change him for good, only to discover that Takeshi used his younger brother to feed his Contract Monsters. As Ren, Shinji and Shuichi battle against Takeshi, he unleashes a new Card that does something the Riders didn't expect to happen.

Shinji and Ren trying to protect a traumatized girl who witnessed a mysterious disappearances among the passengers on a ship when they discovered Takeshi was boarding on it. To make matters even worse, a girl running towards him, claiming that Takeshi had saved her life.

Takeshi's three Contract Monsters reach their breaking point and attempt to attack him on multiple occasions.

Reiko discovers more information about Shiro Kanzaki's actions in America.

Takeshi eventually manages to feed his three monsters after nearly being stopped by Ren.

Yui is attacked by a new Rider.

The doctor tells Ren that Eri's sudden awakening is a coincidence.

Shinji continues to find a way to seal the Mirror World.

Eri leaves the Hospital and is nearly killed by a Monster.

Eri learns that Ren was fighting Monster all the time as a Kamen Rider.

Satoru works as a part-timer waiter at Atori tea house.

Shinji learns that in order to stop the Rider War, Yui must be eliminated.

After having her first meeting with Ren since she regained consciousness, Eri falls back to sleep.

Satoru betrayed Hajime by killing him the moment Hajime finishes Ryuki in the process.

Shinji learned that Satoru was Kamen Rider Tiger.

Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it herself later and begins to panic, and she calls Ren to pick her up.

ORE Journal is seized due to the failure of the Mirror Monster scoop. However, Chief Editor tells Shinji that as long as his PC is in hands, the ORE Journal will continue to exist.

A child version of Yui appears inside the mirror, and warns present Yui that on her 20th birthday, she'll disappear.

Reiko orders Nanako and Megumi to spy on Shuichi.

Asakura tells Tojo that he was really the one that killed Mitsuru.

One of the Sheerghosts begins to multiply, creating thousands of them.

Shinji learns that the Rider War was created to save Yui.

Satoru challenges the other Riders to a battle. Later, he douses their cars with gasoline to stop them from leaving Mirror World.

Takeshi seemingly dies in an explosion after igniting a gasoline-covered car.

Satoru sacrifices himself by jumping in front of a truck to save a boy and his father.

Shinji made his final decision to fight Ren for Yui's sake.

On two separate occasions, Shinji is unable to destroy Ren even though he had found a reason to fight until his hesitation forces him to refuse to fight.

Shinji had to pretend to be cheerful, much to Ren and Yui's concern over Shinji's sudden overacting of joyfulness.

Shuichi collapses from his illness.

Reiko returns from New York with the documents which contain the information about Shiro Kanzaki.

A savage Destwilder is slain by Shinji and Ren after killing a couple.

Continuing from the previous battle, Shinji fights Ren once again.

The multiplying Sheerghosts curl into a pool and later hatch into Raydragoons.

Takumi still refuses to help Mari protect the Faiz Gear and leaves her when he finds that she has been lying to him about her wrist being hurt.

Keitaro and Takumi take Mari to the hospital after the battle with the Ox Orphenoch.

Meanwhile, Akai, the Cactus Orphenoch, kills a fuel station attendant, much to the annoyance of his partner, Midorikawa.

Faiz destroys the Scarab Beetle Orphenoch. Yuji and Naoya try to decide what they should do next. Naoya wants to attack humans, but Yuji believes they should protect them.

At the beginning of this episode, Takumi no longer has the Faiz gear. It was surrendered to the Chief of Smart Brain in the previous episode. He appears to be a bit depressed and takes off on his own for a bit. In the meantime, we learn that the Chief has made Naoya the new Faiz and learn that the Chief's philosophy regarding Orphnochs is if they don't attack humans or if they defend them then they are worthless and are to be eliminated.

Yuji still considers himself human and doesn't want to attack humans. Naoya calls him out to fight him but hesitates during the fight. Yuji, in Orphnoch form, disarms Naoya bringing the fight to an end. Yuka and Keitaro find him. While Naoya insults Yuka Keitaro realizes the new Faiz is not an ally of justice and takes back the belt. As he runs away with it he is confronted by an Orphnoch. Takumi arrives to save the day. We see a new rider watching from afar.

Takumi is beginning to think that maybe he was meant to be Faiz.

We meet members of Lucky Clover for the first time. Chief Murakami ask Jay, a member of Lucky Clover, to take back the Faiz belt and get rid of Takumi. Murakami arranges for Takumi and Mari to be at the same amusement part that Keitaro has taken Yuka to. Takumi has a hard time fighting Jay in Orphenoch form. The new rider makes a brief appearance and fires on Jay at the end.

First appearance of Kamen Rider Kaixa.

Masato went off with his old classmate as they went to find out more about the third belt. Smart Brain continues on their attempts to recover Faiz and Kaixa. Meanwhile, a girl had been followed by an Orphenoch. As glum mood surrounds the Kiba household, Yuji wondered about the identity of the Faiz user.

The battle between Yuji and Faiz ends in a stalemate as the other Orphenoch gets away. Lucky Clover member J is given a final chance to retrieve either belts for the sake of his dog Chaco.

Takumi joined into the fight as he witnessed Masato fighting two Orphenochs as Murakami arrived to stop them. Masato revealed his intention to wanting to join Lucky Clover. Yuji wondered what Masato really is. Is he an enemy or ally? Naoya made another decision as he was rejected by Mari.

Smart Brain recovered Faiz and Kaixa as Kusaka was captured. Mari and others sneaked into Smart Brain to save him. While escaping from Takumi, both of them discovered the entrance to the underground Ryusei School. Over there they stumble into a startling discovery.

Masato continues to blame Takumi for Mari's injuries. He believes Takumi's soft attitude about Orphenochs lead to Mari being injured. Takumi and Yuji decide to meet up again to fight. This time they fight until both are exhausted. Kitazaki tries to join in the fight as Delta but both Yuji and Takumi make it clear that this is a fight between the two of them. Kitazaki decides to fight the winner. Kitazaki is losing interest in the Delta gear. After telling Itsuro that he threw the belt away, he gives it to Aki. Takumi decides he no longer has the right to be Faiz and gives the Faiz belt to Keitaro. Both the Delta belt and the Faiz belt both end up being given to Masato.

Takumi wants to revive Mari and Masato knows that the only chance she has lies with Smart Brain. Yuji finds out that Takumi is not the one that injured Mari. Masato wants to give away the three belts for her life, but decides that his mission to destroy Smart Brain is more important than Mari. Takumi goes to the chief of Smart Brain and asks to revive Mari. He says that he'll only do it if he becomes a member of Lucky Clover by killing Aki. However, he says that it's impossible because he is not an Orphnoch. Meanwhile, Masato manages to get the most scared student of the Ryusei School to fight as Kamen Rider Delta and they both try to defeat the Lobster and Spider Orphnoch. Takumi arrives on the scene and, in a dramatic fashion, transforms into the Wolf Orphnoch to kill Aki.

As the story begins, the three riders transform to fight Orphenochs. Mari catches up to them as the fight concludes and begs Takumi to return home with them. He returns home with her. Lucky Clover wants to recruit Yuka as a member. She is strong and has the potential to become stronger. Yuka, Naoya, and Keitaro volunteer with the kids at an orphanage where Teruo, the boy Naoya saved, lives. Strangers warn the police to quit investigating the “incidents” because they are accidents. Meanwhile, those same strangers continue to follow Yuka and her friends as they head to an amusement park. The strangers seem to be conducting experiments of some sort. Keitaro tries to make a move on Yuka and gets rebuffed. She runs off and is followed by one of the strangers. She is approached by Lucky Clover and is forced to fight to show her strength. Masato and Takumi come to her aid.

The strangers are a part of the police department. They are conducting experiments with the idea that the human component can be extracted from the Orphenochs allowing them to kill the monsters. Yuji and Takumi decide to talk to the police. They believe they can convince them that not all Orphenochs are bad. Mari is afraid that she will eventually become an Orphenoch because of the Smart Brain experiments. Masato assures her that the experiment was a failure. Yuka turns herself into the police in hopes of keeping her friends safe. She is brought to the secret research facility. Takumi and Yuji meet with the police and offer to trade themselves for Yuka. An Orphenoch already at the center rescues Yuka. Takumi and Yuji come upon them and allow the Orphenoch who helped to escape. After Takumi answers Keitaro's call, Yuji and Yuka are surprised by the police. The show concludes with Takumi defending the Orphenoch who saved Yuka.

After being mortally wounded by Faiz, Kaixa, and Delta's attacks, Murakami offers his life to the Orphenoch King. Smart Lady arrives summoning Masato and Takumi to Smart Brain Headquarters to meet the new President. Along with Shuji, they are shocked to discover that it is Yuji. Yuji catches up with Naoya. The Lucky Clover ambush Takumi and they start to fight when six men in identical suits, Naoya among them, appear and transform into a new mysterious foe using Smart Brain-emblazoned belts. Together they attack Faiz.

After fighting with a Riotrooper with Masato's disease that he will die soon, he confronts Yuji that he will fight the Orphnoch King. Mari talks briefly with Rina before getting kidnapped, once again to lure Masato. Hanagata dies from his rapid evolution. As Masato confronts Yuji that he joined Smart Brain, Takumi, Naoya, and Shuji kill all Riotroopers as Faiz Axel Form, the Snake Orphnoch, and Delta respectively. With Masato killed by Yuji as Kaixa, Mari searches for Masato's whereabouts, but he dies before she manages to find him.

Hearing an urban legend about a cave where you can hear the voices of the dead, Amane drags Kotaro and Kenzaki along. However, the Centipede Undead attacks...

Kenzaki discovers the link between Amane and Chalice. An enigmatic man appears with the goal of capturing the Rider System users.

Isaka's plans are in motion, as he seeks those marked by the Spider Undead - those with the potential to become his perfect Rider.

As the race to seal the Category Ace continues, Ikasa sets his sights on the one thing that could interfere with Garren.

Something sinister grows within Mutsuki after he recovers the Leangle belt. Kotaro, still distrustful of Hajime, becomes entangled in an Undead plot.

Tachibana and Mutsuki arrive as Chalice seals the Undead. As Chalice fights Garren, Leangle takes control of Mutsuki again, but the fight ends quickly. After fighting the Capricorn Undead, Kenzaki brings Shirai back home. Tachibana decides to train Mustuki so he can control the belt and Tachibana learns about Mutsuki's nightmares. The Orchid Undead traps Shirai and the Capricorn Undead fights Kenzaki without his belt. Chalice frees Shirai and the Orchid Undead flees. Blade then seals the Capricorn Undead.

The Elephant Undead arrives and defeats Blade and Garren. A strange man, Noboru Shima, shows up at Shirai's house with news from Karasuma. The Spider Undead begins to regain control of Mutsuki. The Elephant Undead seeks out Chalice and wounds him. Everyone learns that Shima is actually the Tarantula Undead, though he still wishes to help. While fighting the Elephant Undead, Shima gives Blade a Rouze Absorber, which transforms him into Jack form. He then seals the Undead.

Mutsuki begins to falls under the control of the Spider Undead again. The Buffalo Undead appears and Garren and Blade rush to seal it. Shima confronts Leangle about releasing Mutsuki, but the Spider Undead persists. After Tachibana is wounded by Mutsuki, Shima attempts to properly seal the Spider Undead in order to save Mutsuki. While on the way to stop Shima, Blade encounters the Buffalo Undead and seals it.

While terrorizing people, Leangle is photographed by King, the Caucasus Undead in human guise. Kenzaki asks Aikawa to join them, but Tachibana does not trust him. King creates a website to slander the Kamen Riders and everyone seeks him out. Kenzaki encounters King, but has his Blay Buckle stolen by the Scarab Undead, who can stop time. Tachibana finds Mutsuki in a bar and learns of Aikawa true identity as the Joker Undead. Kenzaki retrieves his Blay Buckle, but Aikawa is abducted by the two other Undead. Kenzaki then encounters Trial D, an Undead that cannot be sealed.

Garren arrives to assist Blade and drives off the new Undead. Tachibana tells everyone about Aikawa's identity as the Joker Undead. Meanwhile, King holds Aikawa and forces him to transform into his Joker form, which he uses to escape. Tachibana meets Hirose's father, who is behind the Trials. Kenzaki finds Aikawa and learns about how he changed from the Joker Undead to Hajime Aikawa. King and the Scarab Undead appear and fight Blade. Aikawa helps Blade seal the Scarab Undead while King flees.

In order to get back Hajime from his Joker form, Kenzaki asks Mutsuki to give him the 5 cards of the Chalice deck that are in Mutsuki's hands, but for that he must let Mutsuki have his Rouze Absorber. Kenzaki makes the deal and with Tachibana, obtains the King of Hearts card. Hajime uses the card to finally suppress the Joker form and defeat the Trial.

Hajime's problem was solved as he can turn back into a human, but the new problem is on Kenzaki as he and Mutsuki have been tricked by Hirose to fight each other, and Leangle forces Blade to change into King Form. But he knows the King Form is fighting like crazy, but then Chalice comes with the Wild Form and suppresses the power of Blade's King Form.

Using the abilities of the Chameleon Undead, the Titan tricks the Riders into fighting each other.

All the Riders get together to fight the Titan, and Blade's King form finds a new attack combo, the Four Card.

With Garren out of the game and Hajime declared the winner, Blade and Leangle are the world's last hope, to seal the Joker. However, they have to deal with the endless army of Dark Roaches that are systematically destroying the human race.

Kenzaki confronts Hajime in an all out battle with the human race's existence on the line. But can Blade manage to save the world on his own or does the Joker have a plan that will negate the Battle Fight's end game?

Ending up at Souji and Juka’s home, Hiyori and Juka bond over their shared history of being present for the Shibuya meteor strike. Later, Souji offers to join Hiyori at the Tokyo Tower, but when ZECT sets their sights on Kabuto, will he be forced to break his promise?

Having been taken in by ZECT, Souji makes several demands, including speaking to Juka and asking Hiyori to make her breakfast. Arata begins to worry about Souji, but when he arrives at ZECT, Souji has already begun his escape. In the process, he learns that two of the ZECT members are Worms, and Arata tries to warn Misaki, but it may be too late...

Kageyama joins Misaki's team after the Shadow team has been dissolved; someone within ZECT is leaking information and former Shadow team members are getting killed.

Kagami is implicated of being the traitor; Hiyori accuses Tendou of killing her parents.

Tendou finds a man who is his athletic equal; a spree of robberies have been happening by someone called the Phantom Shadow.

Tsurugi heads out for groceries and causes an accident involving Tendou's little sister; the Phantom Shadow have their eye on one of Tsurugi's heirlooms.

Tendou decides to try and get information through the police rather than ZECT; a Worm takes on Misaki's form and goes after Juka.

Misaki and Kagami's plan to get inside ZECT headquarters has failed; Misaki's Worm doppelganger has found her way to Tsurugi.

Kagami investigates after discovering that Tsurugi is a Worm; Hiyori finds a photo of her parents at Tendou's house.

After Hiyori finds out that she's a Worm, Tendou tells her about the murder of his parents.

The baseball team from Juka's school disappears right before her trip which causes Tendou to investigate.

Juka leaves for her trip as Tendou unravels the mystery of the mirror.

Tendou recruits as many of the Riders into ZECT as possible; Tsurugi asks Misaki out on a Christmas date.

Tsurugi discovers the truth that he is a Worm.

Momotaros decides to use Ryotaro's body without his permission, leading to him to become the bodyguard of a minor criminal in need of cash.

Angry with Momotaros for using his body for the sake of money, Ryotaro decides to handle helping Yamagoshi without summoning the Imagin for help!

Ryotaro and Hana pursue two Imagin attacking martial artists, one to eliminate rivals while another only to prove its own strength against other opponents.

Ryotaro tries to discover the truth regarding the karate champion possessed by the Rhino Imagin, while Hana tries to make sense of the Bear Imagin and what he really desires.

The DenLiner crew discover an anomaly associated with the missing future as Hana suddenly transforms into a young girl.

Ryotaro works to try and figure out the mystery of the wandering piano player and what his true wish is before his Imagin can complete its desire.

When Kai begins a multi-tier attack in order to eliminate Airi, both Ryotaro and Yuuto try to stop him, with a Imagin deciding to help in trying to make sure that the past and future is protected...

On their way back to stop Kai from killing Airi, Urataros takes over the DenLiner with several other Imagin, dumping Ryotaro at the moment where his missing memory is revealed!

Ryotaro returns to the present to confront Kai and bring an end to his mad reign of terror, even if it means an end to all Imagin, including Momotaros and his allies!

After Otoya is knocked out during his fight with Jiro, Yuri recovers the IXA Knuckle and plans to track down the man who murdered her mother. But when she faces the man, she is swiftly knocked out as Jiro arrives and also recognizes him… as the man who slaughtered the Wolfen race. He is Rook, of the Fangire’s Checkmate Four! Meanwhile, in 2008, Wataru and Shizuka encounter Rook, who seems to be suffering from amnesia…

As Wataru and Shizuka try and help Rook, who they’ve nicknamed “Biggie”, recover his memories, he begins spending time with a young woman whose bike he helped fix. Their hope is this might jog his memory. Meanwhile, Jiro proposes an alliance with Otoya to take down Rook and protect Yuri, and Otoya tenuously agrees…

After Yuri treats Otoya to a meal to thank him for what he did during the wedding incident, Jiro becomes angry at Otoya’s affection for Yuri, prompting Jiro to propose to her! Stunned, she isn’t sure whether to accept, but Shima thinks it’s a good idea. In her frustration, Yuri sets up a group date where Otoya runs into an old friend. Meanwhile, in 2008, Kengo suggests to Nago, Wataru, and Megumi a group date of their own, where things go poorly, including the antics of a clumsy waitress…

As Otoya works to help Yumi gather money, the Luxur store manager continues to attack patrons, until Shima explains what’s been going on and a trap is set to catch the Fangire. In 2008, Wataru learns the name of the awkward waitress he met before, and after running into her again, the pair hit it off as Mio asks Wataru on a date.

Nago offers his resignation to Shima, but Shima refuses, granting him access to IXA’s Rising upgrade as he feels Nago has accepted his own weaknesses. However, the celebration is short-lived when Megumi and Shima are arrested. Nago is informed by the senior officer responsible that his former dealings with the Blue Sky Group 22 years prior led him to be injured by IXA, and in order to save his colleagues, Jiro appears and grants Nago access to Castle Doran’s Time Door, sending him back to 1986 and bringing him face-to-face with Otoya!

Still in 1986, Nago tries to explain to Tanahashi that he’s from the future and trying to change history, but Tanahashi believes he’s lying. After Nago attempts to throw Otoya off by kidnapping Yuri, Maya saves him and asks about human love, and while Nago can’t explain it directly, he gives her the button from his first bounty, calling it a good luck charm. Later, when the events leading to Tanahashi’s injury begin to unfold, Nago changes the future and vanishes, but upon his return, after assisting Kiva, he discovers that Wataru holds the very button he gave Maya! But why does Wataru have it?

Wataru celebrates his broken heart as he tries to move on from Mio, but it doesn’t seem like that will be easy as he still finds himself spending time with her and Taiga. While at an amusement park, an escaped prisoner takes a hostage and Nago attempt to defuse the situation but the newest member of the Blue Sky Group intervenes. It’s Kengo! And he’s sporting a new look and a new attitude, disrespecting both his former friend and his ex-mentor. Meanwhile, a scientist works to infuse one Fangire with the stolen powers of other Fangires, and Mio seeks an audience with Maya to come to terms with her role as queen…

With the Bloody Rose complete, Otoya plays it for the first time for Maya, blessing it with a prayer to preserve music for all time. Yuri, fed up, runs off and encounters Jiro, who learns of the strange relationship between Otoya and Maya and confronts him about it. In 2008, with the Bloody Rose damaged due to Wataru’s state of mind, he attempts to fix it, but it lacks something that gives it power. Meanwhile, Mio begs Maya to release her from being Queen, but Maya explains that the power itself chooses the Queen, while Kengo is given the IXA Knuckle to Nago’s dismay.

In the aftermath of Mio’s death, Wataru confronts Taiga until Jiro drags him to the Time Door, hoping that Wataru will regain his composure if he meets his father. But when Wataru returns to the past, he is hellbent on saving Mio by erasing his own existence and keeping his parents from getting together. When he is forced to reveal his parentage, Otoya is unable to believe it, but he slowly comes around until the two are attacked by a Fangire, leading father and son to fight side by side.

After Wataru rescues Otoya, the King reveals his true Fangire form and attacks, but Otoya escapes and encounters Kivat-bat the 2nd, who tells him that Maya sends a message: they can never meet again. If they do, the King will kill Taiga, who he is holding hostage. Disgusted by his actions, Kivat-bat the 2nd proposes a pact with Otoya, granting him the Dark Kiva powers at the risk of his life! In 2008, Taiga agonizes over Mio’s death until Bishop reveals Wataru did not kill her, he did, in order to send Wataru into despair. Taiga reacts violently, angering Bishop into acting on his own, plotting revenge…

Upon arriving in the World of Ryuki, Natsumi goes to the Atashi Journal headquarters to learn about the world's Kamen Riders from its editor, Reiko Momoi. After Natsumi's arrival at the journal's offices, Reiko is mysteriously murdered, leaving Natsumi as the culprit as she had a small fork in her hand. Natsumi is arrested under suspicion of murder, and is to be sentenced with a Kamen Rider Trial: a system where Kamen Riders fight in the Mirror World to determine the outcome of criminal cases. Natsumi calls upon Tsukasa to be her lawyer, who meets with Shinji Tatsumi to hear what he knows of what happened to Reiko. As Shinji reveals that he is Kamen Rider Ryuki and he believes Natsumi was framed, his former friend Kamen Rider Knight is fighting in the Kamen Rider Trial, defeating several opponents. Shinji suggests to Tsukasa that he should fight as Decade in the Kamen Rider Trial to clear Natsumi's name.

After defeating Knight, Decade is about to finish him off when Ryuki pleads with him not to deliver the final blow, as he feels Knight must answer for his crime by his hand. However, Abyss uses this time to make his move to take out all three Riders at once, forcing them to retreat with Ren refusing to answer Shinji as he leaves. After her brief encounter with Narutaki, Natsumi learns that Shinji and Tsukasa are convinced that Ren is Reiko's murderer, although Yusuke sees otherwise. Meanwhile, a wounded Ren battles Kamen Rider Odin and defeats him, emerging from Mirror World with Odin's Time Vent as Shinji and Yusuke find him. Learning that Ren obtained the card to save Reiko, Shinji uses the card to go back in time as Tsukasa holds Abyss off. Arriving seconds before Reiko's death, Shinji and Tsukasa manage to save Reiko with the latter cornering her true murderer, Kamata.

Upon arriving in the World of Agito, Yusuke is shocked that there are Grongi in the world which are being dealt with by Kamen Rider G3-X. He is further shocked when he sees an interview with Toko Yashiro, who is physically identical to the Ai Yashiro that died back in the World of Kuuga. Arriving at the police station, Yusuke offers to be the new user of the G3-X suit, but loses the position to Kaito. While this occurs, finding himself in a mailman outfit with a letter to Shouichi Ashikawa, Tsukasa and Natsumi find the man before they are attacked by what they think to be a Grongi. But during the fight, Tsukasa realizes he is fighting an Unknown, an Ant Lord called Formica Pedes.

After Yusuke saves Tsukasa from Delta's attack, Gills is about to fight when he's overcome with pain as the Unknown shows up to kill him. As Shouichi escapes, Toko recognizes him via G3-X's camera. While Tsukasa insists on protecting an annoyed Shouichi, Yusuke reports the defeat of the Grongi and the emergence of the Unknown. He finds Toko saddened, but has little time to help her as Kaito takes the G4 chip stored within his locker. Yusuke demands the chip back, but during the struggle, Toko blasts the chip to bits and a disappointed Kaito leaves. The next day, as Tsukasa continues to keep Shouichi safe from the Unknowns' attack, Yusuke learns that Shoichi was the original user of the G3 suit when he receives the letter for Shouichi from Toko.

Arriving in a new A.R. World, finding himself in a baseball uniform, Tsukasa notices the people are acting strange while saluting each other before he, Natsumi and Yusuke are singled out as rebels against Dai-Shocker with Propheta Cruentis, Go-Jaraji-Da, and Camponotus Worm Maxilla appearing to exterminate them. Amazon arrives to their aid, fighting the monsters with Decade backing him up as the people back up the surviving monsters under a boy named Masahiko.

Evading Apollo Geist and Llumu Qhimil with Diend's attempt to get the GaGa Armlet, Tsukasa has his wounds tended to by Natsumi in Dai-Shocker's school before Yusuke and a weakened Amazon join them, revealing that Masahiko took the GiGi Armlet as Ritsuko arrives and calls in the Dai-Shocker Soldiers after them despite Tsukasa questioning her faith in Dai-Shocker. Later after finding the Hikari Photo Studios in ruins, Amazon ponders if he should join them.