Things are heating up as graduation approaches! Aoi and Shusei are still madly in love despite being forced to live separately as they spend their very first Christmas together as a couple. The two end up going to an amusement park on a date, and afterwards, Shusei makes a shocking decision in order to ensure they stay together—forever. As their story winds to a close, Aoi and Shusei will discover the true meaning of the word “family.”