ayo to all the peeps who read the LN, can someone tell me the max of Rimuru's power

At the end of it, he reached God-level. He even have the ability to travel through time/dimensions. He ended up being the strongest

oh damn, so is the novel finished already?

I think so since the main villain was killed (or rather absorbed) by Rimuru

SO who is the main villain

I heard spoilers that they said its the another Japanese guy who create the school. The one where Rimuru teaches the children.

Yuuki. I read that the author made a 360 degree turn of his character. He even manipulated Chloe (she's the hero that sealed Veldora. Its somewhat related to space/dimension travel) to fight Rimuru

Its Yuuki