Mira grabbed the nodachi and winced. The blade burned her skin, and its magic reached her bones, cracking them. Unlike Lucy, she wasn't a full goddess and her divine will, and magic weren't powerful enough to contain it.
This sword, it was almost impossible to believe it, but Gojo created it as a human, and this is indeed a god-slaying weapon. Or at least, the resemblance of one.
"This is even more trouble than I thought." She looked at Lucy and sighed.
"It'll cost you a lot if you want me to reforge it while keeping its magic intact. From what Mora taught me, I can separate an object's magical and physical form then remake them anew, but it's not an easy feat."
Mira didn't explain too much because it would take too long, but in short, the sword Gojo created was incomplete. It has a magical form, but no physical one, which is the reason it's so unstable.
