Trapped together with Karen Himekawa—one of the top most beautiful girls at school—in a space where they must escape… full of somewhat “naughty challenges”!?

…A room you can’t escape unless you masturbate

…A door that won’t open without breast authentication

…A labyrinth corridor where NPCs tempt you with sexual temptations

…And even a room you can’t leave unless you do [censored]!

Will the protagonist and heroine be able to escape safely!?