"Kei", the only daughter who spends her days in incest, being asked for her body in turn by her father, who is a rope master and loves to drink urine, and her uncle, who is freeloading. Growing up in a distorted family environment, she has grown into a perverted girl who feels happy when her family teases her body. An adolescent girl's unstoppable curiosity about sex turns her into a whore even today.
