I'd say Ahri is a mix of both, but I went for the Japanese mythology first, and added the Korea (the Half-Fox form) because I think it just... fits the image of that particular creature. But... yeah, guilty as charged when it came to getting inspired by that character xD 

As for doing the changes to please myself instead of pleasing you... I would say that both are equally important. If you find my character boring for whatever reason, then it won't be fun for you to interact with her. So it's actually for your sake as well that I made the changes, Frozen :P