Board Thread:Boruto Discussions/@comment-25319479-20170909232705/@comment-1512913-20170910204840

I'm 100% sure that coffin is no ordinary coffin but it's required and is going to be used in order to revive or create someone. 99% sure that the coffin is an invention of Katasuke's, thus is a science ninja tool of sorts. Pretty obvious by now that Kara were the one controlling Katasuke.