Hero (UTG+1, $300): Late 30s asian male, looks considerably younger (early 20s), in office attire grinding after work on a weeknight. Playing very tight due to being card dead, have only VPIP 5 or 6 times in over 2 hours. Only 1 hand has gone to showdown so far, Hero had AA and snapped off a short-stack all-in preflop.
V1 (MP, $150): Late 20s white male with goatee in hoodie and baseball cap. Somewhat loose, calling pre with Ace-rag and offsuit connectors. Has been straddling / double-straddling most orbits and raising his straddle, driving the action along with V2.
V2 (BTN, $900): Middle-aged Eastern European male. Crazy LAG raising over limpers and calling opens with any two remotely suited or connected cards. Recently cracked AA with 75o calling a 3bet IP, calling a Q-high flop, and turning trips. The big spot at the table.
UTG straddles $4. Hero opens to $16 with A♥ Q♥, folds to V1 who calls, folds to V2 who calls, blinds and straddle all fold. 3 ways to the flop.
Flop ($49 after rake): K♠ Q♠ T♣
Hero checks first to act, thinking that this is a bad board to cbet from OOP. Kx is likely not folding, plus there are many pair + draw or two-pair+ hands possible including flopped straights with AJ/J9. Flop checks through.
Turn ($49): K♠ Q♠ T♣ 4♠
Hero bets $30. When such a wet flop checks through, nobody should have two-pair or better. Kx pair + draw hands likely bet flop as well (KJ especially with J♠). Any naked K that didn't bet flop is likely not going to be super comfortable with the flush out there. We should be able to get value from naked A♠, J♠, and T♠ draws. V1 snap calls, V2 folds.
River ($106 after rake): K♠ Q♠ T♣ 4♠ 8♦
Hero checks. V1's call on the turn could be a made flush, but it could equally be a flush draw. If Kx wasn't folding the turn, it may not fold river either. We have showdown value and want to keep V1's range wide plus it might let him bluff the river. V1 bets $70 leaving himself only $34 back.
Is this a fold or a call, and why?