When the wife next door hangs her underwear out to dry on her balcony in the afternoon, it means her husband is not home. (Kuroshima Rei, SONE-669)

A woman's underwear fell from the balcony...it looked like it belonged to the neighbor next door. She was pitiful, gentle, and had huge breasts...After that, I couldn't look at her the same way. One day, I couldn't stand it anymore and secretly took a whiff of the underwear, but she caught me. Instead, she beckoned me into her house...