Sahiro Mi is also a 34-year-old wife and her husband, who is six years older than her, have a 16-year-old son. She is a standard retirement sn in law. She supports Miya's father. After her son was born, her husband often did not go home. Maybe she kept a lover outside and even Miya's father did not come back when she died. In this way, Miya can only rely on her son for life. Watching Tetsuya grow up is her only meaning of life. Tetsuya is very good to Miya. She deeply understands her mother's hard work. At the same time, she also plans to support Miya's beauty in this family. Tetsuya's pride is Tetsuya's pride. However, after having some understanding of sex, he tried to use Miya as the object of sexual desire. Although he was confused, he felt sorry for Miya, but he couldn't help but think about Miya.