Spoiling Naruto manga chapter 679; Madara absorbed Black Zetsu; It confirm.

[XantoS]

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omg hahahahahaha repped my lungs are gonna collapse

 

[ACEst]

if it turns out like that, i'll suck my own di,ck

 

[Handsome Jack]

U're too annoying. Stop making thread Lol

 

[Vapid]

Too bad that this time, it's Kaguya instead of Black Zetsu...

 

[Joseph Gomes]

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hahahahahaaha XD XD XD awesome man

 

[Vapid]

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LMAO I'm done XD

 

[Tera Path]

Nah.

What Madara did to white Zetsu in that panel was take off his arm and put it on his shoulder, because he lost his arm.
It's just making Zetsu's arm his, he shouldn't be able to just absorb him.