My son's girlfriend, Chanyota, is a muscular girl who loves martial arts and met my son at the gym. She and her son are a couple with an uneven appearance, but she says that she started dating him because she was attracted to his slender muscular body and her kindness, and she has a muscle fetish. Today, the two of them are sweating and working out in the room, but Chanyota, who is lustful for the sweat and muscles, gets horny...