The Flowers Of Evil, Vol. 1 by Shuzo Oshimi

In a small, mundane town, a high school student named Takao Kasuga finds himself entangled in a web of guilt and obsession after impulsively stealing the gym clothes of his crush, Nanako Saeki. His secret is discovered by the enigmatic and unsettling classmate, Sawa Nakamura, who uses this knowledge to manipulate and control him, dragging him into a dark and twisted relationship. As Takao struggles with his own identity and desires, he is forced to confront the boundaries of morality and the consequences of his actions, leading to a psychological exploration of adolescence and the complexities of human nature.

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