There's nothing else I can rely on but you, mom!" Hiroki complained about his lack of sexual skills that prevented him from enjoying himself with his girlfriend. He begged Rei, his mother, to let him practice sex with her since she was all he had left. Of course, Rei refused; such behavior wasn't acceptable. However, when she found herself unable to resist his gentle yet passionate caresses due to her weak M-type nature, she gave in reluctantly. She whispered softly to Hiroki, "Just once would be okay.