Villian is auto-rated as Ultra Aggressor (20/8/4, 225 hands in database).

Villian is UTG+1, Hero is Button with [9h]

Preflop: 5 callers, 1 checked (UTG, MP1, SB folded)

Flop: [Kd][Jd] (6 SB)
BB checks, UTG+1 bets, 4 folds, Button calls, BB folds

Turn: (4 BB)
UTG+1 bets, Button raises, UTG+1 calls

River: (8 BB)
UTG+1 bets, Button calls

Results will be posted later

On another note... I also would have raised pre-flop. 88+ on the button whether there's limpers or not is a sure raise for me.

I should also add... you should be raising AJo, ATo, KQo (and obviously the suited versions), and many other hands that generally need to improve to win in multi-way pots. Once again, the same reasoning applies: your hand is more than likely way ahead of your opponents and you gain money from every mistake they made - including preflop.