So here’s the questions
Is the black beast that hakumen fights in the beggining the fusion of nu + ragna brought back in time like he was? I could see that argument working, but I could also see that after hakumen beat the black beast, he was sealed within saya and ragna (and possibly jin too). I think the second explanation makes more sense because there would be no reason why ragna and nu become the black beast in the first place. The former would mean he’s trying to kill ragna before he becomes the black beast (causing a massive paradox) or trying to kill ragna from returning into the black beast.
In the end terumi wants to kill jin and noel. Are they also able to become the black beast? (or purple, or green, or blue, etc. Just kidding, but you get the point). Notice how jin wants to kill noel similar to ragna vs nu.
WTF is the azure?