Racy Retro: Heartbeat Fuse

To save his future, Dong-Ha’s parents hire a private tutor to live with them. Dong-Ha is stunned when his childhood friend, Ye-Byeol, appears at his door in a school uniform. The sight of his first love, now strikingly grown up, triggers a desire he cannot control. Dong-Ha finds himself watching her every move and unable to think about anything but her. Can he survive these private lessons without crossing the line?

(Source: Tappytoon)