True Love Kiss

When Seong-ju, who is much older than Lee Hyun, receives a confession from him, he rejects him, saying he isn’t gay and that there’s a big age gap between them. As time passes, Seong-ju reaches his late twenties and is still a lifelong bachelor... But after spending a rather disheartening birthday, Lee Hyun shows up with a bouquet of roses.

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Original Webtoon:
MrBlue, Naver Series, Lezhin

Official Translations:
Japanese