Kaede Kusunoki works at the company run by her father, and she secretly has feelings for her boss, Asei Shinagawa.
For Kaede, whose future as the wife of the next company president has already been promised, it is a love that can never come true.
She spends her days simply watching Shinagawa from afar.

Then one day, the two of them end up working overtime alone together—and on Christmas Eve, no less…!?