"It'll be great if hyung can see me as an adult", worried Se-Hyun. There was no progress in the relationship with his seven-years-older lover, 'Gyeong-U'.

Following his sister's advice, though, he made a plan to appeal maturely to Gyeong-U, it had not worked out well… At last, can they spend a lovely first day together?

(Source: Bomtoon)