After experiencing heartache when a girl stood him up on a Christmas Eve date two years prior, Junichi Tachibana is cautious of love and detests the holiday season. But as a second-year high school student, he unexpectedly meets one of six girls from his school - Haruka Morishima, Kaoru Tanamachi, Sae Nakata, Ai Nanasaki, Rihoko Sakurai, or Tsukasa Ayatsuji - during the festive period, leading him to rekindle his love and open up his heart once more.