KT vs fish agresive

We shouldn't call KTo preflop here. Best is to 3bet or fold. I think our hand is not strong enough to bet turn. I think best is to xb here. Without looking to spoiler here, I think you are mostly behind. Raise OTT is not that high but I think stronger than your hand in most cases. Price is maybe right but I think I can lay down this hand.

Seeing spoiler: Bummer, didn't think the hand was that strong. However, look to your preflop play as well. If villain is that aggressive it's best to fold the hand and play with stronger hands against him.

I'd 3b this pre from time to time to widen my value range vs fish and get him headsup.
Postflop: you're a bit lucky both of you use small sizings.
I'd checkback Turn as i don't see alot of value in betting here, it's the bottom of your Kx hands and it's a good hand to bluffcatch river.

Thanks for feedback

KTo is more fold, than 3bet vs 5X open and call is worst.
OTT is check, there is not much worse hand that call turn bet, when he min raise it's FOLD, looks like trap imo.

Without looking at the spoiler:

I don't know what the biggest leaks of the fish are, but without knowing them I would fold to a 5x open and wait for a better hand to attack his stack, a 5x open looks very strong so he might have a top hand here, as I don't see a reason to bet this big otherwise.

However if he was opening so big a lot of hands, this would be a perfect 3bet ...