Yu is not his biological mother, but the woman his father married ten years ago. When his father died one year into the marriage, she raised her unrelated adult stepson by herself. He admires Yu as both a mother and a woman, and his greatest wish is to make her happy. That hope is shattered by his treacherous friend Yuzuru, who fakes illness, leaves early and approaches Yu behind his back. Overcome with anxiety, he races home to see what is happening. An adult role-play production.