My stepmother, who my father remarried, has a voluptuous, erotic figure with large breasts, and her eroticism is so overwhelming that she hardly seems like a mother. Despite knowing it's wrong, I can't help but feel restless every day... One day, I peek in on my stepmother as she tries on a daring swimsuit she bought in her youth, preparing for summer! The swimsuit is even more erotic than I imagined, and I immediately get a full erection! I thought she would catch me and get angry, but...