Villain had been playing veeeeeeery passively pre, up until that point...
Would you have called?
It reminded of this https://forums.pokerstrategy.com/forum/thread.php?postid=3043796
$0.10 NL - Holdem - 6 players
SB: 102.3 BB (VPIP: 20.00, PFR: 13.33, 3Bet Preflop: 0.00, Hands: 15)
Hero (BB): 134.6 BB
UTG: 114.4 BB (VPIP: 53.33, PFR: 6.67, 3Bet Preflop: 0.00, Hands: 15)
MP: 128 BB (VPIP: 50.00, PFR: 11.67, 3Bet Preflop: 12.50, Hands: 60)
CO: 97 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 9)
BTN: 106.9 BB (VPIP: 47.22, PFR: 2.78, 3Bet Preflop: 0.00, Hands: 37)
SB posts SB 0.5 BB, Hero posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has K♦ K♥
fold, MP calls 1 BB, fold, BTN raises to 106.9 BB and is all-in, fold, Hero raises to 134.6 BB and is all-in, fold
Flop: (215.3 BB, 2 players) 5♣ 2♦ 9♠
Turn: (215.3 BB, 2 players) 3♠
River: (215.3 BB, 2 players) J♦
Spoiler
BTN shows 2♠ 5♠ (Two Pair, Fives and Twos)
(Pre 20%, Flop 75%, Turn 84%)
BTN wins 204.6 BB