User blog comment:B214/Question and Answers 2/@comment-162.202.198.72-20140122104105

I want to ask this questions relating to Holy Swords because I know about Excalibur but I am curious about a certain Japanese Sword that is supposed to be as powerful as Excalibur can you please tell me it's name, and information about it because the only thing I know about it that is was found inside a serpent or Dragon.