Platinum Kiss is a new idol group that consists of three girls: Takano Ayaka, Kamii Maki, and Ooizumi Maina. Ayaka's older brother is their manager. He's also a huge pervert! When he goes missing before a big live event, however, they all feel really uneasy. By the time he's found, He is just hiding in a locker to watch these girls changing their costumes. But to make them feel confident out from stage fright, He gives the girls all the seed and loving of his big cock to give them an energetic performance.