Wrong. Asur and Rakshas are not inherently evil like demons and Satan in Christianity or Islam. They are just powerful beings like Devas. There are many example of Good Asur/Rakshas & Bad Devas. Hinduism doesn't have concept of permanent, external evil force that tempts humans to sin.
Can you speak Korean? What are the mistranslations you spotted?
I don't speak Korean. most of my knowledge about it comes from dramas I have watched. I can't create list of mistranslations because it's tedious work. It's all over places. I can just tell sometimes Korean dialogue & subtitle doesn't match in meaningful way.