You're trolling so hard... The summon was in front. Danzo got behind him and used wind jutsu to attack the rear of susano'o. I'm done here because I'm not quite sure how to deal with you.. >.>It didn't pass Susano'o , it didn't hurt Sasuke, it didn't strip the skin of Susano'o, it simply made a vacum that caused it to look as if it's breaking up, that's all. Oh, and the fuuton wasn't even Danzo's, it was his Summon's.
So yeah, nothing (so far at least) was shown to be able to break through Susano'o. Deal with it![]()