You've read quite a few doujinshi series, and you know a lot of them are fantasy. But...oh my god.

You never thought you would fall into a room that only appeared in your imagination. A room like a hotel, but on the door is written:

"You can't go out if you don't have sex."

Your enemy - Navier, who is also locked up with you, sits on the bed and smirks.

"So...my little boy, what do you choose to do?"