A new celebrity student by the name of Fumiya Fujisaki transfers to Ohashi High School. At the same time, Cat's Eye intends to steal a precious violin, formerly part of Heinz's collection, bequeathed to Fumiya by his late father. Initially, Ai takes Fumiya's cool, detached manner as a personal offense, and she eagerly supports the theft plan. But after she gets to know him better, she and her sisters come to his aid when he becomes the victim of an attempt on his life by his treacherous bodyguard.