It's been a while since Reiko, my father's new wife, came to the house. But Yuta still couldn't get along with her. A sensual body line. The sexiness she exudes unconsciously. Reiko was too erotic to call her mother. Just looking at her makes me erect. But Reiko is my mother. Yuta was desperately trying to suppress his feelings. On the other hand, Reiko, who has no idea about Yuta's feelings, approaches him with a lot of body contact to try to get along with him... The conflicting feelings of the two lead to an unexpected development.