200NL - KK against overshove on flop

[moldman]

villain has only been at the table 5 hands, but is running a smooth 80/40 so far. I'm already thinking to myself, one time gimme your monies. Then this...
Full Tilt Poker, $1/$2 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

UTG: $210.15
Hero (MP): $408.50
CO: $482.90
BTN: $97
SB: $97.60
BB: $200

Pre-Flop: K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP)
UTG calls $2, <font color="red">Hero raises to $9</font>, 4 folds, UTG calls $7

Flop: ($21) 6[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">UTG bets $201.15 and is All-In</font>, Hero ??