It’s December, which means Christmas is coming. But in Japan this holiday is borrowed from Western culture and carries more of a romantic and family meaning than a religious one. It’s a great excuse for the whole family to have fun in some place—and, of course, for young people to confess their love. And so, at school, right after the semester-ending ceremony, a Christmas party is being prepared, where Takasu Ryuji intends—at any cost—to confess his feelings to Kasieda Minori without missing such a wonderfully romantic mood. But lately, Minori has been acting surprisingly strangely… and it seems she’s absolutely not happy about the coming holiday…