Moa Hoshizora and her husband have a very perverse hobby of having sex while someone else is nearby; the secrecy adds excitement and thrills to the sexual encounter. One day, she and her husband went to a friend's house to hang out, which was also the plan for them to secretly have sex like a couple of lovers. Moa's husband even told her to go into the bathroom to take care of their friend while he was showering, and then both continued to have sex right next to their sleeping friend, when suddenly he woke up and...