My hobby is the underwear collection. Wearing the collection, I was delusional in front of the mirror. However, only my favorite sexy underwear was stolen. Tsukasa, who doubts his younger brother, gently looks into his younger brother's room from the balcony. Then my younger brother was masturbating with Tsukasa's underwear. The next day, I searched for my brother's room but couldn't find it. There is no choice but to provoke in underwear and let him crack his mouth. Although he was a younger brother who did not confess easily, he broke his mouth with erotic blame. From that day on, I began to feel pleasure in controlling my younger brother and blaming him for eroticism.