In the story, a girl called Mai appears before a boy who happens to hate Christmas. As it turns out he was born on December 24 and thus was named Santa, causing him to hate the holiday. Moreover, as a child, he never had any festive occasions, such as birthday parties. With the power of Christmas, Mai is given the mission to improve his luck and change his views for the better.
My Santa! (2005) is currently not available on any services.
Demon Slayer: Kimetsu no Yaiba the Hashira Meeting Arc
Demon Slayer: Kimetsu no Yaiba -To the Hashira Training-