青出于蓝～缘～ 圣诞特别篇

The story follows Hanabishi Kaoru's encounter with a Santa Claus who bears a striking resemblance to Sakuraba Aoi, leading Kaoru to affectionately call her "Aoi-chan." Together, they spend Christmas, and as they part ways, Santa Aoi makes a heartfelt wish, praying that Hanabishi Kaoru and Sakuraba Aoi will meet again someday...