Drowning in the past, Kurose Kazuma is an example of someone who is gloomy, has no hope, no dreams, and has never felt love. One day while thinking about his past in high school, he remembered Mizuki Haruka, a girl who had recently become a renowned actress, and was once Kurose's friend. While wondering what he would have changed if he could go back in time to his high school days, he meets a goddess figure who seemed to be cosplaying as a bunny girl, and suddenly, Kurose finds himself back in his high school days. Given this second chance, Kurose resolves to fix the mistakes of his past and produce a happier outcome for his life.