Another woman has kissed Night, reinitializing his system to accept her as his new girlfriend. Riiko hunts down the apartment where Night is staying with his new lady, frantic to find him before he is fully "imprinted" and she loses her chance with him forever.
Oh no! Night's system has been reset to another woman, by a kiss she planted on him. Now he wants nothing to with Riiko. Riiko goes on a frantic chase to find night and his new "girlfriend" She must hurry before Night imprints with the woman and all chances at Riiko and him are lost!