Kisame

[ObitoTheSage]

How in the hell did kisame get gills ?

 

[Wolves]

cause hes a shark???????????

 

[Ansatsuken]

After he does fusion dance with a shark

 

[Gerkak]

cause hes a shark???????????

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[Angelic.]

It's all body modification

 

[Claymantan]

Maybe it's just a persistent jutsu or something that he keeps active

He has the chakra for it

 

[Mikeuhsomething36]

The same reason why suigetsu is literally made of water. Body modification

 

[~Ethereal~]

He has a weird name.

 

[Nick01]

Mods I suppose.