There's a new student in Akademi High, meet Y/n Kanzaki. She's a shy, kind but friendly girl who's very gentle to everyone. Because of those features, she became popularly attractive to the other students and gained a lot of admirers in school including Ayano-chan and her other rivals. Because of this event, Ayano-chan didn't noticed that there was a second mysterious serial killer infiltrated the school premises and planning to kill everyone in so many brutal ways for her own fun and..for other reasons. Can Ayano-chan and the others caught and identify the serial killer? Or..they were all end up as a bunch of puppet pawns to Yandegire-chan's Game?