$10 NLHE 6-max: Kings 2nd NFD on river, bad board

pokerstars - $0.10 NL (6 max) - Holdem - 4 players
Hand converted by PokerTracker 4: http://www.pokertracker.com

CO: 100 BB (VPIP: 24.66, PFR: 20.32, 3Bet Preflop: 10.12, hands: 441)
BTN: 189.9 BB (VPIP: 26.61, PFR: 13.82, 3Bet Preflop: 0.00, Hands: 129)
Hero (SB): 101.8 BB
BB: 122.1 BB (VPIP: 29.63, PFR: 22.22, 3Bet Preflop: 4.17, Hands: 56)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has Kc Kh
CO raises to 2.5 BB, fold, Hero raises to 10 BB, fold, CO calls 7.5 BB

Flop : (21 BB, 2 players) Qc Tc Th
Hero bets 7 BB, CO calls 7 BB

Turn : (35 BB, 2 players) 9c
Hero checks, CO bets 22.5 BB, Hero calls 22.5 BB

River : (80 BB, 2 players) 2c
Hero checks, CO bets 60.5 BB and is all-in,

Flop we can also check, we block KJ/Flushdraws and even Backdoorflushdraws so we don't need much protection and it's hard to get 3 streets of value on most runouts+ its nice to have some good calldownhands after checking. River I definitely fold. IP has QTs/99/TT and maybe some percentage of T9s he didn't raise flop with and maybe some QQ he did not 4bet + there is a ton of nutflushes possible. This spot in usually underbluffed so should be a pretty easy fold actually.