$25 NLHE 6-max: river? tight opponent over 160 hands

Villian Stats (VPIP/PFR/AF): 9/7/2

PokerStars - $0.25 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

MP: 100 BB (VPIP: 9.82, PFR: 8.04, 3Bet Preflop: 2.22, hands: 113)
CO: 68.52 BB (VPIP: 63.16, PFR: 18.42, 3Bet Preflop: 7.14, Hands: 39)
BTN: 139.24 BB (VPIP: 21.18, PFR: 17.73, 3Bet Preflop: 7.25, Hands: 207)
SB: 108.72 BB (VPIP: 15.38, PFR: 15.38, 3Bet Preflop: 0.00, Hands: 13)
BB: 104 BB (VPIP: 25.49, PFR: 17.65, 3Bet Preflop: 6.25, Hands: 52)
Hero (UTG): 112.2 BB

SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has K:spade: T:spade:

Hero raises to 3 BB, MP calls 3 BB, fold, BTN calls 3 BB, fold, fold

Flop: (10.4 BB, 3 players) 5:club: T:diamond: 4:diamond:
Hero bets 5.92 BB, MP calls 5.92 BB, fold

Turn: (22.24 BB, 2 players) A:heart:
Hero bets 12.72 BB, MP calls 12.72 BB

River: (47.68 BB, 2 players) A:spade:
Hero checks, MP bets 20 BB, Hero ?

Check/fold the turn unless you have specific postflop information that suggests he is going to bet the turn with a worse hand.

i guess his preflop calling range is pretty strong but there are some draws there. isnt it too nitty to assume hes never floating here? or betting for protection a qts t9s type hand that thinks i could have sthng like aqs? based on the fact the board contains draw shouldnt i make a 55-70% value bet with such a good kicker?
i understand that my perceived range betting acting first is pretty high but it could be a fine board to cbet too. he could be calling with the nut flush hitting the ace there but i think im getting exploited too often if i check-fold like i had air or 89s even if hes so tight preflop(at least c/c to get info which kinda looks exploitable plus if hes so tight betting there even closer to the pot he could sometimes fold better hands).
please explain ur thought process cause im a newbie to online poker and i would be pleased to have some insight from more experienced players.thnx in advance.

He's going to have some mid pps to call the flop with maybe but mostly you're beat. The part of his range that doesn't have you beat on the flop has the Ad, moreover 100% of his range that you were beating folds the turn.

You can rest assured that you are not being exploited by someone playing 10/8.

You only beat a bluff and I just dont see him bluffing here. He mightve hit a set on the flop. Im prolly folding and not betting the turn.