Tae-young, the adorable boy who used to follow Ji-won everywhere as a child, reappears after seven years — now a handsome and mature adult. But their reunion takes an unexpected turn when Tae-young mistakes Ji-won for a one-night stand partner, shattering the innocent shell of their long-time friendship.

Confused by his changing relationship with Tae-young, Ji-won’s troubles only deepen when he fails to register for classes and ends up taking 'The Theory of Love'. There, he meets Seon-ha, and a drunken night leads to yet another one-night stand.

Just as Ji-won starts to spiral over his own weakness for pleasure, the tangled relationship between the three begins to unfold in a completely unexpected direction…

Original Webtoon:
MrBlue, Naver Series, Lezhin, Bomtoon

Official Translations:
German, French, Thai, Japanese