Blue Elysium, a new fantasy marine resort, is holding its trial opening and Motoki wants the gang there. Kojo and Asagi end up working a yakisoba booth while Yukina and Nagisa see the sights. Elsewhere on the grounds, Sayaka rescues Yume Eguchi, a younger girl abductee but after giving the girl a photo of Kojo and sending her ahead to the lifeguard centre, is herself taken prisoner by a mysterious sword shaman

Kiriha Kisaki, who works for the Taishikyoku, an agency similar to and in competition with the Lion Kings, offers to release Sayaka once her mission is complete. Until then Sayaka will be put to work. Kojo discovers that Yume is a succubus demon, and her ostensible sister Riru is actually her own alter ego, concocted to cope with past trauma. The others all rise under her mischievous control and make advances upon Kojo.

While Asagi investigates, she is interrupted by Lydianne Didier, who reveals that she is working for the Taishikyoku, managing the LYL program and will protect their systems against all comers. She challenges Asagi to hacking combat and begins her attack. Lilith's spirit awakens early and automatically, contrary to Kazuomi's schemes.

Yukina stalks Kojo as he plays with Yume. A stranger approaches and while chatting her up, half-jokingly accuses her of stalking. He is Gajou, the father of Kojo and Nagisa. Soon after, he leaves the island with Nagisa. On New Year's Eve, Yukina exploits Nagisa's absence to play house with Kojo in his apartment. Motoki arrives with Yume, Kanon, Astarte and Asagi and all visit the temple together. A cryptic message from Nagisa arrives with only a photo of a magic circle in the sky.

Natsuki magically prevents Kojo from leaving her premises. Kanon recruits Nina to spring him. Outside, Kiriha offers Yukina and him a private jet and false travel documents. Her agency is having fun at the expense of the rival Lion Kings. Asagi continues her efforts to leave the island with Mogwai's aid. Lydianne assists, and later the convict Meiga.

Gajou and Nagisa arrive at the temple at Lake Kannawa. He is captured and his jailers are two Lion King miko, Yuiri Haba and Shio Hikawa. Plans for dealing with the sealing relic known as 'Avalon' are discussed. Shirona Kuraki of the Lion Kings will conduct the ritual involving Nagisa, supported by Yuiri. A side-effect of the ritual will permanently expunge the remnant of Avrora from Nagisa.

Myriad forces continue to converge on the frozen Lake Kannawa. Asagi and Lydianne, riding in the pink tank, are joined by Ibliss, a high-ranking vampire from the Warlord's domain, after he rescued them from flying demons. Gajou and Shio carry the comatose Nagisa across the frozen lake, seeking a haven for her.

Shio defies Azama. From afar, Shirona incapacitates the lower level cultists. Okiyama appears on a wyvern and leading a second one to retrieve Azama and they flee. Azama joins the other confrontation and first betrays Ueyanagi, transforming him into a golem, and then attacking Yuiri, triggering a distraught Glenda to transform and fly off with Yuiri, Kojo and Yukina.

Strange occurrences at sea result in Itogami Island becoming isolated. Nagisa continues to suffer effects from her previous exertions. A terrorist group known as Tartarus Lapse begins operations on the island.

The terrorists launch an attack upon the warehouse district. Afterward, Kojo and Himeragi meet the terrorist leader, Senga Takehito, who tries to recruit them. He reveals his beliefs about the true nature of the island, its purpose of reviving Cain, and his plans to oppose this.

At Mogwai’s urging and with Motoki’s assistance, Asagi makes her way to the Keystone Gate in order to end the hacking attack upon the island’s network. Meanwhile, Kojo and Himeragi battle ineffectively against the demons unleashed by the terrorists.

After the terrorist incident on Itogami Island, Kojo and the others are helping with the Island's recovery. On the other hand, Asagi, who gained popularity with the public for preventing hacking in the past incident, works as an ambassador for revival activities for the Island Management Corporation. However, Kojo feels like something is off when he sees Asagi on the big screen.

Kojo and the others go to rescue Asagi, who was imprisoned on the 0th floor of the Keystone Gate. Kojo is worried about Himeragi's poor condition, but Himeragi goes with Kojo nonetheless. What was waiting for Kojo and Himeragi on the 0th floor?

Kojo and the others are helpless by the power of Meiga Itogami's Cleansing ability. Kojo wonders what the hell this Cleansing ability is. At that time, the truth about the Cleansing is passed on to Kojo. Will Kojo be able to protect Himeragi and Itogami Island from Meigawa Itogami?!

Itogami Island had returned to a peaceful state and Kojo's party was getting excited about the upcoming Valentine's Day. Meanwhile, Kojo sees Asagi getting into a car with one of Vatler's subordinates, and starts to get suspicious. Grenda, who was with Shio and Yuiri, is attacked by Veres Aladar, the Imperial Council Chairman of the Warlord's Empire. Grenda flees to Itogami Island, where Kojo is located.

Kojo goes to Iblisveil Aziz in search of answers on how to defeat Veres Aladar, but Iblisveil only gives Kojo a vague answer. Kojo returns to the agreed place of the duel shorthanded and begins the duel.

Kojo wakes up at Natsuki Minamiya's house. On TV, Asagi and Vatler appear to be working together and declares war against the Holy Ground Treaty Organization. In addition, Asagi says that Grenda will use Cain's legacy that she has protected as her power, to help save Itogami Island. Meanwhile, to save Nagisa, whose life is in danger, Hektos tells Kojo and the others that she will need to hold a ceremony.

With the help of La Foria and Veres Aladar, Kojo broke into the council and declared Itogami Island as his territory as the 4th Primogenitor and gained the right to veto the attack. But for him to be recognized for this, he must expel Vatler from the island and become a true ruler. Can Kojo defeat Vatler, who has absorbed the power of the Cleansing, and save Itogami Island from the crisis?!

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We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.