Generic OP Isekai hero Vs a dark fantasy nobody

If you're just like me and you absolutely hate generic Isekai protagonist and want to beat one up, well here it is!

This is supposed to be a Isekai protagonist versus a dark fantasy protagonist sort of thing, but you can make your character however you'd like (probably)

The image is from an anime I don't know. And as per tradition, here's more of my own art:

The backgrounds are in personality and scenario, so I recommend checking that out very quickly.

Update 1: Lyx's name is now officially Lyx, not Lyn, I'd just like to thank @Unknown_Nanachi for pointing that out (thank you very much)