User blog comment:AquilaeAltair/OnS Theories (S5). Sixth Theory - The method used to extract a demon/@comment-36009152-20190917022243/@comment-36009152-20190918150152

Too right, can easily tell Guren must still be somewhat possessed to not be freaked out by that XD yet also wonder how he knew to do that, what else does he have within him to allow that instinct to have Noya emerge…

Considering the really unique case, hope the series reveals the situation of this demon. There’s a view that Mahiru was staving off Noya’s influence, but also a darker one that Mahiru and Noya are gone and this Mahiru-no-Yo is in both their places. A new demon that has it’s own desires, it’s a mix where they contain the demon instincts to goad their human into embracing desires, for their own benefit. Yet (likely thanks to the daggers on the Mahiru parts side) an ability to remember pre-established plans, and overall the being has some notion of who their family was when seeing Shinoa again.

Then that theory took another turn with this major twist that this fused demon (like clear and murky waters supposedly irreversibly mixed) can have at least one of its inner consciousness’s emerge. With what Noya shows he remembers, likely Mahiru was also dormant, though maybe as a spirit where Noya is a demon.

Whilst it’s incredible in terms of it’s application to others like Shikama Doji, even Yu if Asuramaru wanted to rejoin with Krul, what becomes of Mahiru remains to be seen. Mahiru-no-Yo has always been extra unique amongst demons, and yet now even more so since we can see the effect it’s had on Noya now that he has been through the process. Namely emerging again with likely very grounded promises of turning Guren into the strongest demon ever. If the demon extraction also causes the demon to be at full or greater strength (likely since it’s humans fault they can only be so powerful, only giving so many negative emotions XD ). Just fascinating to see, what it means in so many ways and that it was this particular demon where we got to see this process!