Sephiroth glanced down at Masamune.
He had always felt that it had a mind of its own, but perhaps...
No, this Nu would not consent to being placed inside an inanimate object, even one as animate as his Masamune.
But perhaps eventually he could place the darker side of his own self into the blade.
Create a sword with a will to end, and leave himself as a champion of peace.
It would suit him better than he had thought.