All About Lust

Innocent and naive art student Wooseung has never dated anyone before. But he's head over heels for his first love, the handsome upperclassman Sunjin. Wooseung dreams of confessing his feelings, holding hands, sweet kisses... and he's delighted when Sunjin says the attraction is mutual! Just one major problem: Sunjin's idea of a relationship is much more hands-on! Can Wooseung handle all the steamy surprises Sunjin has planned for them?

(Source: Tappytoon)

Note: includes 20 extra chapters. This work was first serialised in Lezhin before it got discontinued and moved to Series Naver. There is an adult version and a non-adult version.