Naoto lives a peaceful life after he saved Rika. But one day, the Misty May suddenly appears... They are depressed because they can do nothing.... When he has a bath at night, a girl, Nagi, suddenly appears in front of him. Actually, Nagi is an android. One the next day, the Misty May appears again. Rika has a battle against her and Naoto makes up his mind to have sex with Nagi to save Rika...?