Board Thread:Naruto Discussions/@comment-26708623-20161103030058/@comment-734582-20161104161251

On chapter 527 page 5, Tsunade says "i know they left the second hokage on the verge of death". This suggests the Golden Brothers did not kill Tobirama.

The problem however is that the wording is vague. For instance, it's not clear if it refers to the same instance (After all Kinkaku would've attacked Tobirama, not the both brothers). The golden brothers do say "dead ass second hokage" so they at least survived him.

It seems however that the coup and the ambush we saw in Danzo's memory are one and the same (so Tobirama was on his way to the meeting when Kinkaku squad attacked) suggesting they did kill him. So it's possible Tobirama succumbed to his wounds later.