I legit own one of those five foot long shitty anime katanas, my cousin's neighbor didn't want it anymore when he was moving out and thus by osmosis it moved to my possession because of course I wasn't going to turn down a free giant shitty anime katana (i managed to drive it home by putting it in diagonally from the passenger seat to the back seat)

I have no idea if it's decorative or not, I think it was actually sharp but like goddamn it's been sitting in its gigantic sheath in the back for like two years, as I promised my sensei I wouldn't unleash its demonic power