Ao-kun to Sai X no Sex

Overview

Kuzumi, a university student who loves making his partners feel good through sex, is suddenly approached by Ao, a stranger who asks, “Have sex with me.” Having slept with both men and women, Kuzumi readily agrees, but Ao’s request is for a “perfect, mind-blowing sex” that he can use as his ultimate fantasy material for the rest of his life. Determined to satisfy him with sweet, indulgent sex, Kuzumi is shocked when Ao bluntly tells him, “It wasn’t much different from masturbating.” For the sake of his pride, Kuzumi throws himself into finding every possible way to make Ao feel incredible...!? (Source: Kaiohsha, translated) Note: Includes two extra chapters.

Source: AniList