User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 17: May 2013/@comment-4829046-20130605090234/@comment-5840892-20130606024037

Really of what? I know of a few Legendary Swords (Excalibur is the classic example.) But I don't know much about a Sword Cursed in a way that it makes it's wielder into a head-case with the Blood-Lust. My friend once told me of a sword that if it's wielded will/could cause the world to be destroyed by the wielder as it gives him/her some great power, and for that reason it was sealed away. (That's the closest think I know of to the sword described in Darkness the past couple of chapters.)

Another sword he told me of was a blade that no one with an impure, evil heart could touch without being destroyed. (It also said that person who handled the sword had to be without hate in their heart.) It has no know known forger in any myth or legend (as it is said to have been created before man-kind learned how to work with or forge metal of any sort), and is said to sleep somewhere in the Earth itself. Apparently the Legendary Sword in this myth was the inspiration for the famous Master Sword (also known as the "Sword of Evil's Bane".) that appears in the Legend of Zelda Series.

So in short, how is this sword a "rip-off"?