Haikaburi no Tenshi

In the decadent 90s, Yuki Ogihara has lived an unremarkable youth while harboring a secret love for delinquent girl Saiko Samejima. Yuki's intense longing sometimes manifests as licentious self-gratification, eventually evolving into fantasies of "being defiled together with Samejima." When Yuki hears rumors that "Samejima will sleep with anyone for money," she becomes consumed by jealousy—desperate to know everything about Samejima, to possess her completely. Meanwhile, Samejima finds herself torn between Yuki's idealized image of her and the reality of who she truly is.

(Source: Kadokawa, translated)