SAN-243 My stepmother was once my former classmate who bullied me - Himesaki Hana

Hana's husband has a child from a previous marriage. It turns out that the child is a classmate she used to bully. Although Hana acts all innocent in front of her husband, whenever she is alone with her son, she teases him in a sexual way almost every day. Although the son hates it, he enjoys it and continues to be bullied.