In his love for Baudelaire's poetry, Kasuga Takao idolizes Saeki Nanako, a girl at his school, from afar. When he impulsively steals her gym uniform, his quiet world unravels as Nakamura, a strange classmate, discovers his deed. Rather than expose him, Nakamura manipulates Kasuga, intertwining their fates. Now, haunted by guilt and Nakamura's influence, Kasuga navigates a turbulent path towards Saeki while questioning Nakamura's sinister motives.