[quote=@KoL]
<Snipped quote by The World>

Probably not. Muramasa is pretty much known only to either people familiar with Japanese history, or weebs/otaku. and in itself is a weak legend as far as stories go. Cursed/Demonic swords are just a concept, that would be way too broad to give an additional boost to any specific legend. That would be similar to a grimoire about a completely unrelated holy sword becoming more powerful by piggybacking on Excalibur's fame.
[/quote]

Fair enough, that's why I asked, thank you.