When Yui's mother remarried, Yoshifumi paid off her mother's debts. For that reason, Yoshifumi became Yui's stepfather and benefactor. Yui, after her mother died, Yoshifumi confessed his feelings for Yui and asked for her body. Yui, feeling the gratitude he had for her, could not refuse his advances. Their lips met, their skin touched, and their private parts joined. And as man and woman, they became intimate in Kokoro and body...