A guess of mine is apart of it might be life extension in case of momo he's dead and it seems kara members might have low life spans since jigen states they have not much time
Also the power of the jigen pretty much makes you like momo whose immune to ninjutsu of all types so it will make it easy to overpower to accomplice whatever their goal is. Also I think the more ninjutsu you absorb the more destructive the seal as we see from kawakii.
Also the power of the jigen pretty much makes you like momo whose immune to ninjutsu of all types so it will make it easy to overpower to accomplice whatever their goal is. Also I think the more ninjutsu you absorb the more destructive the seal as we see from kawakii.