After a Christmas Eve disappointment two years ago, Junichi Tachibana struggles to express his emotions, haunted by past rejection. His romantic fortunes shift when he encounters various girls who captivate his heart: the lively and popular Haruka Morishima, his childhood friend Kaoru Tanamachi harboring unspoken affections, the bashful transfer student Sae Nakata, Ai Nanasaki from the swim team nursing a sour impression, Rihoko Sakurai, his sweet-toothed old friend, and Tsukasa Ayatsuji, the flawless class rep concealing a darker side. With Christmas approaching, Junichi yearns for a chance to spend the holiday with his true love.