Haji Aneumyeon Jiwojineun Bang

The first in the "Sexcape Room" series!
Eun-Hyuk finds himself in a room with his old crush and muse, Anna. Since the two parted on bad terms, the situation isn’t ideal. But if that isn’t bad enough, turns out that in order to get out of this room, they need to…have sex! With so much on the line, will the two be able to break out?

(Source: Lezhin X, edited)