Looking for a manga about a princess who lives in a super snowy place with her grandmother-person. She uses chemistry a lot and has a huge backpack (like Kagome-esque huge). Princess meets a boy later on (think his name may be Shiro) and they eventually team up but whenever he fights, he loses his memory, but he's still pretty badass. For the life of me I can't remember much of what happened but I first read it on mangafox a while back. If anyone knows what this manga was called please help

that's it! thank you so much! >.<