Showa Forbidden Secret Story -The Night Before Going To War I Slept With My Son- Izumi Terasaki

In the final days of the war, Kayo lost everything in the flames and was left alone with her son, then remarried her current husband and lives with him. Her excellent son Shinichi studies hard, thinking of his mother. Kayo is tormented daily by her husband's tyranny. One day, a draft notice arrives for Shinichi, who learns of his mother's shameful past. Shinichi notices his father's kindness for the first time. Kayo secretly washes Shinichi's body in the bath at night. The father tacitly allows it. That night, the forbidden brush is used.