Naoto lives a peaceful life after he saved Rika. But one day, Misty May suddenly appears and Hikari is abducted by her. 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. The next day, Misty May appears again. Rika has a battle against her and Naoto has to make up his mind to have sex with Nagi to save Hikari..? Or is it already too late?