Aster is a cheerful and goofy wheelchair-bound girl who resides in the blissfully ignorant world of December--so ignorant in fact that the residents have no idea about Magicians or the other worlds.

Obtaining a magic pendant that allows her to transform into the superhero of her dreams, Aster turns her life into the action movie she's always dreamed of. She chases after her charmingly sly rival Virs, a phantom thief.

However, the beautiful, snowy world of December has much more darkness and moral ambiguity than she is prepared for.

[From official website]