Board Thread:Theories and Speculation/@comment-35850816-20180611181629/@comment-30323490-20180611183519

I think it was stated in one of the data books, but i don`t know if it was really stated that he is the greatest or just very skilled at it.

In all fairness, Kisame`s feats with water style far surpass everything Tobirama has ever shown. Actually, Tobirama showed very few water style techniques. I can only recall when he used it against Izuna and in the 4th war to cut some of the Shinju Tree`s branches.