A battle for love, Yamaguchi-kun vs. Ishizaki-kun?! Yamaguchi-kun caught sight of Satsuki while Ishizaki-kun held her tightly during the school festival. Fueled by jealousy, Yamaguchi-kun reacted in an unexpected way…?! Also, Satsuki experiences her first Christmas with Yamaguchi-kun as her boyfriend! They will have a Christmas Eve date at a memorable place for them…