The day my nephew Koichi came to visit, he was still at that curious age and became interested in my relationship with my husband. He started asking about our sex life, and when he learned we hadn't been intimate, he suddenly moved close to me. Without warning, instead of my vagina, he inserted his finger into my anus. Surprised by his actions, I couldn't resist—and gradually, I began to feel pleasure... The scene captures his innocent boldness clashing with the complex emotions welling up inside me.