He either has 77 or some suited connectors? So at flop its quite difficult becouse he is so short. I hold Kd so I think I have to call flop? But I also know he is going to jam turn almost everytime.. Whats your toughts?

(ye I know its fullring nl2z but fullring thread is so dead)
PokerStars - $0.02 NL FAST - Holdem - 9 players
Hand converted by PokerTracker 4

BTN: 85 BB (VPIP: 12.78, PFR: 7.22, 3Bet Preflop: 0.00, Hands: 182)
Hero (SB): 164 BB
BB: 95 BB (VPIP: 12.63, PFR: 9.47, 3Bet Preflop: 5.41, Hands: 96)
UTG: 43.5 BB (VPIP: 13.04, PFR: 7.35, 3Bet Preflop: 0.00, Hands: 69)
UTG+1: 212.5 BB (VPIP: 12.06, PFR: 9.22, 3Bet Preflop: 2.22, Hands: 142)
MP: 113.5 BB (VPIP: 32.00, PFR: 28.00, 3Bet Preflop: 18.18, Hands: 26)
MP+1: 164.5 BB (VPIP: 100.00, PFR: 100.00, 3Bet Preflop: 100.00, Hands: 1)
MP+2: 95 BB (VPIP: 27.82, PFR: 6.02, 3Bet Preflop: 6.56, Hands: 135)
CO: 360 BB (VPIP: 14.29, PFR: 9.52, 3Bet Preflop: 0.00, Hands: 22)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has K K

UTG calls 1 BB, fold, fold, fold, fold, fold, fold, Hero raises to 4 BB, fold, UTG calls 3 BB

Flop: (9 BB, 2 players) 7 J Q
Hero bets 5 BB, UTG raises to 23.5 BB, Hero ?

Probably checking flop.

I think it is fine to bet flop as villains are calling with Qx and Adxx always but when raised, it does put you in a ****ty spot. It is such a big raise but I think you have to call at least one. When I was a beginner I would tend to raise in these spots with Qx to defend against diamonds, maybe villain is doing the same? The only hand you are drawing dead to is the A high flush and you are still pretty high up in your range.

V has a stack less than 50bb. X/r is going to be better than betting.

Sorry didn't notice V's stack size but even so. Against loose passives like this I think a better line is to bet/bet/bet as villain won't bet with weak diamonds but will call bets with them for sure and possibly the same with his Qx/Jx.