One day, my son brought his friend Jun home. However, my son let Jun into his messy room! I started to tidy up in a hurry, but suddenly I felt someone looking at me. To my surprise, Jun was staring passionately at my butt. I thought "He's a boy," which made me think how cute he was, and I got turned on by his gaze. I couldn't contain my feelings, so I put on some flashy underwear that I'd never even shown to my husband, and appeared in front of Jun again...