CO: 97,605
BTN: 143,576 (vpip 24, pfr 15, hands - 105)
SB: 88,332
BB: 83,462
Hero (UTG): 104,666
UTG+1: 66,835
MP: 109,985
MP+1: 24,540

8 players post ante of 175, SB posts SB 700, BB posts BB 1,400

Pre Flop:(pot: 3,500)Hero has K K

Hero raises to 2,800, fold, fold, fold, fold, BTN calls 2,800, fold, BB calls 1,400

Flop:(10,500, 3 players) J 3 8
BB checks, Hero bets 4,200, BTN raises to 12,000, fold, Hero calls 7,800

Turn:(34,500, 2 players) 4
Hero checks, BTN bets 17,250, Hero calls 17,250

River:(69,000, 2 players) Q
Hero checks, BTN bets 34,500, Hero?

Raise more preflop. A mini raise with Kings is probably not a good idea.

raise like 3.5-4k pre
why do you bet the flop, call his reraise and then slow down OTT and OTR?!
3bet the flop to 30k and see what he does. with 200bb Deep he will 3bet JJ and sometimes 88 pre. so the only Hand that beats us is 33 and sometimes 88.
if he wants Action, give him some Action and get it in

I am folding here. The only reasonable bluff, he can have, is T9s, and he has a lot of value, that beat us. A flopped set still beat us, and the flush got there on the turn. Linewise I think, everything look good here, but I am not a fan of mini-raising preflop when stacks are still this deep. There are blinds and antes to fight for, and when you go this small, you give people an insanely good price to come in there and fight for the pot, many of them with position on you.

Its different, when stacks are down to like 15 blinds, because even 1 blind is a significant amount to call for the player in the BB, and he might actually fold rather than investing 1/14 of his stack to call you and play out of position. But this deep he is calling you with literally any two cards, and correctly so.