OBA-121 I'm Gang Raped By My Son's Classmates, Everyday Kyoko Yabuki

Kyoko remarried a man named "Takumi" who was divorced with a child. She was worried about whether she would be able to get along with Takumi's son, Shinji, but with the help of the kind-hearted Shinji, she was living a happy life. But Kyoko didn't know. She finds out that Shinji is a "bullied kid" at school... One day, Shinji brings her classmate home. Shinji has been living without her mother for a long time, and when she sees her stepmother, Kyoko, her classmate's eyes change.