Pure Club, an adored idol group, has gained a massive fanbase around the world. However, not all admirers show affection for Pure Club in the conventional sense. Karen Amamiya learns this firsthand after a hooded man harms her during a handshake event, leaving her injured and subsequently causing her to renounce her involvement with the group and retreat from public life.
Nina Kamiyama is a self-proclaimed tomboy who defies traditional feminine beauty standards by sporting short hair and wearing her high school's male uniform. The threat of a girl's assault near her school prompts local educational institutions to cancel after-school activities and encourage students to walk in groups. Despite this, Hikaru Horiuchi witnesses Kamiyama walking home alone and decides to intervene. He accidentally uncovers her secret-- Kamiyama was formerly a member of Pure Club and signed as their central idol.
Unfortunately, Horiuchi is not the only one who knows of Kamiyama's past-- her attacker also knows and is weaving around in the shadows, stalking and anticipating his next attack.