Risa raised her son Keisuke alone until he entered university and left her. After that, she married a man with children. For the past three years... Risa has been raped daily by her husband in the vagina and by her stepson orally. However, Keisuke, who received an offer from a local company, is coming back home. Just as Risa thought she could finally live with her son alone, her husband and stepson, who disapprove of this, force her to offer her remaining hole—the anus—to Keisuke...
