After learning that her son, Naoya, is being bullied by her friend, Kenji, her mother, Mako, warns Kenji. However, Kenji begins to threaten Mako, saying, "I won't bully Naoya if her aunt has sex with me." She was Mako who resisted, but she had no choice but to accept Kenji when she thought of Naoya. Naoya secretly witnesses the whole story... A courageous Naoya couldn't stop her, and all she could do was watch.
