Whilst Gimp is technically powerful, you can really tell it’s made by programmers. I cannot stand the UI and shortcut defaults, but maybe I’m damaged from having used Photoshop a couple times.

It’s based off Tachoyami(or whatever the one that was recently near nuked was called), and can be found googling a little. It’s annoying, but they got sued, and this was their way of protecting themselves.

https://github.com/aniyomiorg/aniyomi

Not directly piracy, but maybe you can find a version or similar one either on fearlessrevolution or MPGH. Without more info these are just guesses though.