Swiun Seonbae

Seong-Bin hates dating but likes sex.

He only enjoys casual relationships with girls. Because of this, he became a public enemy among the male students on campus, but one day, he receives a confession from Joo-Won, a rough and unsophisticated student who has returned to school. To relieve his boredom, Seong-Bin hangs out with Joo-Won, venting his anger or using him as an outlet for his sexual desires. However, no matter how much he does, Joo-Won is genuinely affectionate towards him, and he keeps catching sight of him.

(Source: Ridibooks, translated)