Board Thread:Theories and Speculation/@comment-31477926-20170702121758/@comment-7292165-20170823012035

@Namikaze

Yet it shows us that it does have a physical form. It is a shield-like weapon. You believing that Itachi channels it through his entire Susanoo if far'fetched. Besides it can't be completely ethereal if non-ethereal things can come into contact with it.