If I Love, It's Unrequited!

Saebyuk ends up liking high school girl Kyungi who he meets everyday at the bus stop. As his feelings become deeper and turns into a one-sided love, Saebyuk turns into a girl because of the hormone resonance disorder. Kyungi appears to be interested in female-turned Saebyuk and approaches Saebyuk, with the two becoming friends.

Original Webtoon:
Naver Series, KakaoPage, Ridibooks, MrBlue, Bomtoon, Lezhin, Onestory, Nate, Anytoon