Sana Mizuhara, who lost her husband early and raised two sons with one female hand. A quiet older brother, Koichi, and a spoiled younger brother, Yuji. Although their personalities are exactly the opposite, they are both proud sons who have grown up healthy. However, Yuji is still unable to wean and has little sexual knowledge. Koichi, who knew that he was giving handjobs and blowjobs with the intention of education, was also required to have a body. Sana's fighting begins with her brothers, but Sana proposes forbidden mother-child 3P sex so as not to be a source of conflict.
