He has always had unforgivable desires for his mother, Shizuka. Now is his last chance to tell her. But if he does, it might destroy their relationship... Daisuke is worried about his emotions as he is about to move out and live on his own. But the night before the move, Daisuke witnesses Shizuka masturbating with a lonely look on her face. And he is convinced. His mother feels the same way. It would be lonely for a woman if he left. Daisuke decides to cross that forbidden line.