Since Shinya saw his stepmother Saa indulging in self-pleasure in the bathtub, he could no longer be satisfied just by watching. 'If your body is lonely and you desire a man, then let it be me... But even if it's only in name, we're parent and child.' Shinya could only agonize over it. On the other hand, Saa had no idea her son was grappling with such inner turmoil and asked him to help clean the bathroom. The bathroom he always peeped into; the body he yearned for right before his eyes. Shinya couldn't hold himself back...
