Fate Over Kaleid Liner Prisma Star Illya Twowei Herz! is about underage girl Illyasviel von Einzbern and her underage girlfriends Miyu Edelfelt and Black Illyasviel von Einzbern as they go on a magical adventure through puberty. All three girls begin to discover their feelings and sexuality while fighting evil as magical girls. Actually, they just fight cards. The whole show is just a made-up card game that's used to get underage girls to kiss each other.