Childhood friends Ai and Arisa. They seem to be good friends to those around them, but Arisa is jealous of Ai's cuteness and beautiful breasts, and secretly bullies her without anyone knowing. She pinches her beautiful breasts and nipples with force, pinches them with clothespins, and plays with her crotch... One day, Arisa and her friend Yuka take Ai to the warehouse to bully her even more, and when they continue to play with her beautiful breasts, Ai begins to feel something, and their abuse escalates...