Mahiru's birthday comes and goes, which means Christmas is right around the corner! On Christmas Eve, Amane hosts everyone for a night of friendship and laughter, and he can't help but notice that something seems amiss between Itsuki and Chitose. Could trouble be brewing for the lovebirds? Meanwhile, the holiday train doesn't stop chugging. Amane and Mahiru make plans for New Year's and Valentine's Day, and the pair has plenty of time to deepen their love. Just when everything looks perfect, a classmate comes to Amane with a stunning confession!