Gokusaishiki ni wa Doku ga Aru

Synopsis

Atsuto, who was suspended from high school for problematic behavior, decided to stay with his older cousin, Toru, for two weeks. The conditions given for living together were: "Never touch Toru's bangs." However, Toru's eyes, which were hidden as if to reject others, stole his heart in an instant when he was young. Atsuto wants to know more about this person, he wants to see him. Using the massage as an excuse, Atsuto becomes more and more obsessed with Toru's vicious eroticism, but Toru has a younger "super-brother" who loves his older brother too much, how will Atsuto achieve his goal...!? (Source: Houbunsha, translated)

Anime adaptations