Erina visits the house of her classmate, Ichiro, who is a shut-in. - But when I press the intercom, no one answers. - Just as they were about to leave, Kenta, who claimed to be Ichiro's father, appeared. - Kenta calls his own son a "poor k**." - Enraged by these words, Erina ignores Kenta's restraints and enters Ichiro's room. - As soon as Ichiro sees Erina, he attacks and tackles her. - Then the man and Kenta who were in the room join in the act and make a mess of the frightened Erina...