Synopsis: Operation: Heartbeat

Operation Heart-Pounding / 두근두근 대작전 "Don't you think we're missing that heart-fluttering feeling?" From elementary school all the way to high school, Nam Do-yeon and Jeong A-rin have gone from childhood friends to lovers. For a couple who strives for a perfectly rational relationship, a plan to reclaim that one missing piece of excitement— Operation: Heartbeat begins! Original Webtoon: Naver Webtoon, Naver Series