Here's the simple policy, relevant to this case.
/e/cchi is NOT for:
- Western art. Due to frequent quality issues and lawsuit-happy western artists, western art or fanart is not allowed, with very few exceptions.
Funnily enough, the character is of Eastern origin, done in Eastern style (mostly), and the only one bringing a lawsuit would be Nintendo, except that'd mean they'd have to acknowledge the character and tarnish their rep.
Now, admittedly, I fell for the bait. But there's a lot of pedoshit in that bait and I'd argue it's against the global rules.