Recently, Chitose noticed that her bras had disappeared. She couldn't figure out why her favorite underwear was disappearing one after another... Then her son's friends Atsushi and Norio came to visit. Chitose invited them over to her house as usual, but she witnessed them sneaking into her bedroom and looking through her bras. Knowing that the culprits were her son's friends, Chitose approached them to warn them off, but...