His name is Rohak Souri. He is a blood magic user, but he will also be featured in regular slice of life content as well, conveyed as a witch or likewise in those situations. Typically he'll wear middle eastern inspired garb: kurta, harem pants, short vests, other things like that.
((Original art by Paexie, character now owned by me))
Link
TheFiddleCat
Glad to see him getting use already~! Can't wait to see him more. :D