I know there was a katana out there that hung on a sim's back, but I have lost track of it for a long time. Does anyone know where I can find any katana accessories that are placed on a sim's back? Ty~

File is called
manaccessorykatana017-[mesh_by_mercury]
No idea where I got it from though.

I think you are probably talking about these one : http://t0.gstatic.com/images?q=tbn:...83Zfqf--UrKxW7r
You can find it at simscave here : http://simscave.mustbedestroyed.org...p?topic=17785.0 (but give it a day cause tonight the site is down.)
Its already answered in this thread : http://modthesims.info/t/508886
Other katana suggestions are by tamamaro : http://tamamaro.blog.fc2.com/?tag=s...BC%9ACAS&page=0 even though not equipped on the back but on the side..But i love the quality so i thought to leave the link here just in case ^^
I also have this one that i can share privately from simnaru if you are intrested : http://imgur.com/KvNF6TR

Ty! The first picture is precisely what I was looking for. Sadly, I've tried the SimsCave since you've posted your suggestion, and it still has not worked. I continually get an error message "500 - Internal Server Error" every day, throughout the day. Anywhere else this can be downloaded from? Or does anyone have it hanging around that they'd be willing to share? xD

Its up right now..!
Here you go i just took it from the thread : http://www.mediafire.com/file/abdbb...+by+Mercury.rar

Ty so much, Sirrena!!! (Also, the Tamamaro link gives a "The corresponding article was not found" error message~!)