kagutsuchi

[Prabhoo]

when Tobirama saw Sasuke use kagutsuchi ....he implied that he has never seen such a kagutsuchi ....

it might be possible that his former opponent izuna uchiha had the blaze release kekkai genkai and used it aganist him during their battles .........

and also almost everyone is saying that he somewhat resembles Izuna uchiha ......and to that both of them have a straight comma sharingan

 

[Behemoth55]

Yes, I think so too. We just have to wait for Madaras flashback.

 

[Joon]

Scan? Tobimaru could be stating that Sasuke's manipulation of Amaterasu was far greater then anything he has ever seen.