I wish the teacher was my father. He probably wouldn’t be as violent as my previous father.” Mina looks at her beloved daughter Lala, who is happily chatting with Sugiura, the piano teacher. …I divorced because of my husband’s domestic violence, and it was very painful for my beloved daughter. Calm days finally arrived after divorce. However, the mother and daughter were not yet aware of the great madness that Sugiura was hiding.