Original Novel:Naver Series, Comico d6w4a

Original Webtoon:
Naver Series, KakaoPage, Comico, Lezhin, Ridibooks, MrBlue, Bomtoon, Toptoon

Official Translations:
Indonesian, Thai, S.Chinese, Japanese

Han Shin-woo met Ga-hyun, a female college student, at a club where she went with her colleagues for a college graduation party.
Two people who meet and date each other in a relationship that saved her in an embarrassing situation.
Shin-woo looks young and naive, and Ga-hyun falls in love with Han Shin-woo's wonderful appearance.

And March.
Shinwoo will be in charge of third grade homeroom at Daehan High School, where he was appointed for the first time, Jin Ga-hyun, class president of first grade class in third grade... ...?

"Maybe. Do you have an older sister?

Shin-woo asked with the feeling of catching straws.

"... No."

Gahyun's voice was mixed with tears.