AA Backdoors Nut Flush

2-3 NL, this is the biggest game in the room. SB is the main V and he starts the hand with 500 and everyone else covers.

Hero in utg with AdAc

Pre: Hero limps, HJ Btn sb bb complete. 5 ways

Flop (15) : Kx7d6d
2 checks, hero 10, btn sb bb call

Turn (45) : Kddd
Checks around

River (45) : Jdddd
Sb bets 30, bb folds