Board Thread:Questions and Answers/@comment-200.246.78.2-20151030195927/@comment-25121259-20151031002520

She wanted the Susano'o Unit, but she could neither remove the user from it, nor fully bring him back to the world. As Hakumen is quite powerful of an existence, she could only observe him at 20% (of his power/capabilities/existence).

For what you ask ? To defeat/kill Terumi (which kind of did pay off at the end of CP), along with all the other things she had prepared.

Of course, it doesn't have to be Kokonoe that observes him. As Rachel was at a higher observational position, she kind of forcefully took over for her in CS (which could mean that she was even able to draw more of Hakumen's power, but the game isn't too clear on that). Hakumen himself is also able to do that, even Terumi is mentioned that he should (or already did) be able to do that (with himself). It is suggested that during CP it is Hakumen observing himself (since he parted ways with Rachel at the end of CS so that he wouldn't be interrupted anymore).

In case he does that during CT, the story ends pretty quickly as he defeats both Nu and Ragna and throws them into the Cauldron after each other (does that even change anything ?). In this case, Hakumen is the first one to arrive when Nu awakens, defeats her and throws her there, then comes Ragna and he does the same. As he is observing himself this time, he isn't interrupted by anyone during his duel with Ragna, so he owns him without giving him any chance to activate his BlazBlue.