Talk:Ushiwakamaru/@comment-33579485-20171111141740/@comment-2601:647:4001:B520:998F:ED3E:4B71:FA6B-20171210125630

It's called a shiri-zaya usually used as a status symbol. The furs were traded from foreign lands, also they were typically used for tachi swords.

If you check mama Raikou, you'll notice she has a shiri-zaya as well. Lots of stuff were pretty much just for show.