I've been a plain, unpopular virgin since I was young. One day, when I went outside my room, I bumped into Mrs. Satomi, who had moved in next door a week ago. She cleans the front door without a bra every day, and I couldn't help but be curious about her. One day, when I heard moaning from next door, I couldn't help myself and climbed over the balcony wall to peek into the room...