Some things may contain spoilers. Not really yet though.
[About the Author] - More about the creator of Snowfall than you probably need to know
[Cast] - Important characters.
[Wion] - Map of and info for the continent of Wion. (As in: 'Why on' Earth did I decide to go with such a stupid name?)
[Yersai] - Anything you might need to know about the Yersai.
[Humans] - Anything you might need to know about humans. (wait, what?)
[???] - To come.