Unusual_Hilichurl
I can see Genshin Villains being inspired by the brutality of Re:Zero. plus Vision users may find the way powers in some Mangas work to be interesting, and some of them may try to mimic them. I expect Fischel to be his biggest Fan in Teyvat, cuz she is a natural born Otaku who love roleplaying and use edgy and cringe lines while she speak, I can see her worshipping him in the future and see all of his Mangas as some "Divine Knowledge" beyond Mortals comprehension.