A Room You Can't Escape After Having S○X

The protagonist, Kaisuru Ryou, is locked in a sterile room with a beautiful girl. To escape the room, they are told "You can't leave unless you have S○X." Why were they trapped in this room in the first place? And will they be able to unravel the mystery of the room? Will Ryou do it⁉ Will he actually do it⁉︎ Or── *This is also published on Kakuyomu.