When it comes to studiousness, Shirogane is second to none, but as for athletics, he's hopeless, which is why he's training hard for volleyball in the gym after school. However, no matter what he does, Shirogane isn't showing any signs of progress. Playing volleyball for P.E. is only a week away, and at this rate, his image as the perfect president of Student Council will be crushed. Just as Shirogane gives in to despair, Fujiwara shows up. Swallowing his pride, he begs her to coach him, and so Shirogane's days of training under the enthusiastic tutelage of Fujiwara begin. Will he be able to deliver an average serve in time?

Kaguya and Shirogane had an argument over the "home visit incident" and as they're both unable to be honest about their feelings, a hostile mood pervades the student council room. Since Kashiwagi has a boyfriend, Kaguya goes to her for "romantic advice," although she lies, saying she's "asking for a friend." Meanwhile, when Shirogane asks romcom fan Ishigami how he can make up with the "person of the opposite sex" he had a fight with, the class treasurer goes off on a heated rant... After getting an earful of various advice, Kaguya and Shirogane begin to realize how they really feel about each other.

The boy who has been dating Kashiwagi, thanks to Shirogane's help, comes back yet again for more relationship advice from Shirogane. But something seems different about him. With his return from summer vacation, he has completely transformed into a player. Getting advice was just an excuse to brag about his girlfriend to Shirogane and Ishigami, and the two suspect that he has "experienced nirvana." They decide to leave the couple alone and observe them from afar as the two lovebirds start to get into a romantic mood...

The newly formed student council welcomes Miko as the auditor, but for some reason the student council room is full of tension. Miko is such a stickler for the rules that if she sees anything that appears remotely inappropriate she frequently ends up harshly berating them.

After their second semester final exams end, there are plans for a sleepover at Kaguya's house. But Shirogane and the others are unable to come, leaving Fujiwara as the only one who can join. While barley glancing at an upset Kaguya, Fujiwara gets excited about the totally hot butler Mr. Herthaka without realizing it's Hayasaka dressed as a man. That night as the girl talk unfolds at the pajama party, a sleep-deprived Kaguya takes on a strange mood before anyone can notice. With that energy, she calls Shirogane and ends up asking outrageous questions.

The moment the culture festival reached its finale, the jewel object made by Shirogane was stolen by a phantom thief who calls himself Arsène. Kaguya and the others headed to the roof where the phantom thief keeps appearing, but there was no one there. Fujiwara, who transformed into a genius detective, struggles to solve the mystery behind the calling card and uncover the thief's true identity. But Kaguya, left behind at the scene of the crime, had begun to figure out the criminal. The problem is the location. Kaguya traced the phantom thief's line of thinking and headed to where he is now...

Shroud in a cape and dressed in the guise of the phantom thief Arsène, Shirogane waited for Kaguya's arrival atop the clock tower roof overlooking Shuchiin. When asked why he would do such a thing, Shirogane answered that there was something he wanted to show Kaguya. The festival's afterparty has already begun as the sun set over this school and the students could be seen encircling and enjoying the bonfire. While the emotions that could not be expressed with words mingled between Shirogane and Kaguya's hearts... Shirogane carried out his ultra-romantic operation!!