Senpai is an Otokonoko(2019)

Senpai wa Otokonoko

Can true love really overcome any obstacles? Saki, a high school student, confesses her feelings to Makoto. Taken aback, Makoto reveals his secret, but the sudden discovery doesn’t seem to bother Saki who is already head over heels for him. After being rejected, Saki asks Ryuji, Makoto’s childhood friend, for some advice on how to win his heart. A love triangle unfolds when Ryuji realizes that he might also have some feelings for his old friend.

(Source: WEBTOON)