Board Thread:Theories and Speculation/@comment-44142243-20200416151624/@comment-32685487-20200418045550

The SoT and Yata Mirror are ethereal weapons that Itachi found, I think Itachi used sealing jutsu to somehow add them to himself through his Susanoo because they only appear with only HIS Susanoo and it is hinted through Orochimaru's words and BZ's words that Itachi found them. Itachi is a absolute prodigy and an incredible genius so if there was was a way like what I mentioned I'm sure he did that