KK does it again
 

PokerStars Game #10556973262: Tournament #52923891, $2.00+$0.20 Hold'em No Limit - Level VII (100/200) - 2007/06/22 - 00:50:54 (ET)
Table '52923891 167' 9-max Seat #5 is the button
Seat 1: Bunnyki$$ (2075 in chips)
Seat 2: docfoxx1 (4764 in chips)
Seat 3: seanyg1322 (6493 in chips)
Seat 4: judoh (3585 in chips)
Seat 5: catfan17 (2750 in chips)
Seat 7: ZXKITKAT (19104 in chips)
Seat 8: Daveinit (8025 in chips)
Seat 9: Jheregh (26505 in chips)
Bunnyki$$: posts the ante 25
docfoxx1: posts the ante 25
seanyg1322: posts the ante 25
judoh: posts the ante 25
catfan17: posts the ante 25
ZXKITKAT: posts the ante 25
Daveinit: posts the ante 25
Jheregh: posts the ante 25
ZXKITKAT: posts small blind 100
Daveinit: posts big blind 200
*** HOLE CARDS ***
Dealt to Bunnyki$$ [Kd Kh]
Jheregh: calls 200
Bunnyki$$: raises 400 to 600
docfoxx1: folds
seanyg1322: folds
judoh: calls 600
catfan17: folds
C_Chabun is connected
ZXKITKAT: raises 7000 to 7600
Daveinit: folds
Jheregh: folds
Bunnyki$$: calls 1450 and is all-in
judoh: folds
*** FLOP *** [2d 5h 6d]
*** TURN *** [2d 5h 6d] [4h]
*** RIVER *** [2d 5h 6d 4h] [Ad]
*** SHOW DOWN ***
ZXKITKAT: shows [As Jh] (a pair of Aces)
Bunnyki$$: shows [Kd Kh] (a pair of Kings)
ZXKITKAT collected 5300 from pot
*** SUMMARY ***
Total pot 5300 | Rake 0
Board [2d 5h 6d 4h Ad]
Seat 1: Bunnyki$$ showed [Kd Kh] and lost with a pair of Kings
Seat 2: docfoxx1 folded before Flop (didn't bet)
Seat 3: seanyg1322 folded before Flop (didn't bet)
Seat 4: judoh folded before Flop
Seat 5: catfan17 (button) folded before Flop (didn't bet)
Seat 7: ZXKITKAT (small blind) showed [As Jh] and won (5300) with a pair of Aces
Seat 8: Daveinit (big blind) folded before Flop
Seat 9: Jheregh folded before Flop

Yep you got a bit unlucky there.
He was using his big stack with a marginal/good hand.

raise more preflop

Yeah, like shove.