With her dislike of Yuzu and Mei's relationship, Matsuri uses the secret photo she took at the shopping mall to blackmail Mei into fooling around with text-pal on Christmas. Meanwhile, Yuzu knows nothing of this and struggles to bake a cake for her first Christmas together with Mei. While her excitement builds, Mei comes home and breaks the news that she won't be able to join their Christmas Party due to student council work...
But you were so fast to break 
that rule, even after I warned you.
Aber diese Regel hast du direkt
nach meiner Warnung gebrochen …
Pero no tardaste en desobedecerme
pese a mi advertencia.
Pero no tardaste en desobedecerme
pese a mi advertencia.
Mais j’ai beau te le demander,
tu désobéis sans arrêt.
Ma nonostante ti abbia avvertita,
hai subito disobbedito.
Mas você quebrou a regra
logo depois de eu avisá-la.
Но ты сразу же ослушалась
моего предупреждения.