Natsuki Haibara, a university senior who failed his high school debut and lived through a colorless youth, suddenly finds himself sent back seven years—right before starting high school! Given the chance to redo his regrets, Haibara leverages his past life experience and manages to join the top-tier group of six popular boys and girls in his class. Among them is Hikari, the beautiful girl he once had a crush on…!? A naturally high-spec protagonist unconsciously shines as he relives his second shot at youth. A fresh, strong-and-new-game-style high school romantic comedy begins!