2/4 Ring KK hand

[mwalsh2020]

My friend was hoping for some response from the 2p2 community on this one. He elected to just call the pfrr with KK instead of 4betting and after the flop underrepresented his hand. Thoughts on all streets appreciated, but especially the river.

PokerStars Game #6559119988: Hold'em No Limit ($2/$4) - 2006/10/08 - 03:03:45 (ET)
Table 'Irus III' 9-max Seat #2 is the button
Seat 1: rdegs21 ($405.20 in chips)
Seat 2: ric460 ($286.90 in chips)
Seat 3: MiracleFlop ($620.70 in chips)
Seat 4: D-Nguyen ($909.15 in chips)
Seat 5: bparis ($1081.35 in chips)
Seat 6: ZenTek ($380 in chips)
Seat 7: Blazed187 ($463.55 in chips)
Seat 8: GenMacArthur ($576.85 in chips)
Seat 9: mrmatrix69 ($400 in chips)
MiracleFlop: posts small blind $2
D-Nguyen: posts big blind $4
*** HOLE CARDS ***
Dealt to bparis [Ks Kd]
bparis: raises $8 to $12
ZenTek: folds
Blazed187: folds
GenMacArthur: raises $24 to $36
mrmatrix69: folds
rdegs21: folds
ric460: folds
ric460 leaves the table
MiracleFlop: folds
D-Nguyen: folds
bparis: calls $24
*** FLOP *** [Jc Jh 5s]
bparis: checks
GenMacArthur: checks
*** TURN *** [Jc Jh 5s] [5h]
bparis: bets $32
GenMacArthur: raises $68 to $100
bparis: calls $68
*** RIVER *** [Jc Jh 5s 5h] [Ac]
bparis: checks
GenMacArthur: bets $440.85 and is all-in
christina37 joins the table at seat #2
bparis said, "AA?"
bparis: folds
GenMacArthur collected $275 from pot
GenMacArthur: doesn't show hand
*** SUMMARY ***
Total pot $278 | Rake $3
Board [Jc Jh 5s 5h Ac]
Seat 1: rdegs21 folded before Flop (didn't bet)
Seat 2: ric460 (button) folded before Flop (didn't bet)
Seat 3: MiracleFlop (small blind) folded before Flop
Seat 4: D-Nguyen (big blind) folded before Flop
Seat 5: bparis folded on the River
Seat 6: ZenTek folded before Flop (didn't bet)
Seat 7: Blazed187 folded before Flop (didn't bet)
Seat 8: GenMacArthur collected ($275)
Seat 9: mrmatrix69 folded before Flop (didn't bet)