Why does Kakuzu need hearts if he is already Edo and can't die?

[theRPGdude]

Is it just so people won't kill him? Cause he can't die!

 

[Katkot]

He need them so he can make that fly monsters

 

[Scooby Doo]

For the chakra elements.

 

[nibilbhai]

I Think he need them for his chakra elements. Anyways, nice question...

 

[Yusuke Urameshi]

Like others said, for the elements most likely.

 

[Itachi Uchiwa]

to add the suiton element to his collection !

 

[Prime Rib]

Elements to his collection

 

[KGB Kakuzu]

Kakuzu uses the hearts to power his masks like a battery one could say

 

[zinescience]

element and chakra

 

[Piratefish]

For the hell of it.

Also, the masks have separate chakra systems so they may make him immune or at least resistant to genjutsu.

 

['Nāpalm]

for elemental chakra