Thread:ResidentialPsycho/@comment-27090820-20160203013112/@comment-25942629-20160221145112

Like Crimson Marauder said, Mahiru was actually really nice and famous for treating people from lower families kindly. She was extremely popular. When Seishiro beats up Sayuri and tries to strip her, Mahiru is the one who steps in first and saves her. When Guren gets hurt, she's the one visits him in the nurse's office, too. She even sacrificed the rest of her humanity to save her little sister, Shinoa. As far as I can tell, she was a very good person. Guren fell in love with her for a reason. In the manga, he also tells Shinoa that Mahiru is dead, and this demon is not her.

The demon, Mahiru-no-yo, who we get to see in the manga is, of course, a -demon-. As a demon, she is consumed with desires and is violent, cruel, and exceptionally power-hungry and ruthless. As expected from a demon. Yu is in the same boat right now, but his demonhood has not yet evolved to show more complicated desires like that and is stuck in the "killing and raping everyone" stage. The demons appear to be so violent and overwhelmed by simple desires like this at first before evolving and becoming more complex in what they crave. Yu could very well end up changing like Mahiru did.

Mahiru-no-yo is a demon like Yu, so they're probably both "evil." Mahiru and Mahiru-no-yo differ as much in personalty as human!Yu and demon!Yu, if not more.

Sunako30, have you bought the first Catastrophe omnibus yet? It reveals the differences in Mahiru's two forms pretty clearly. Poor Mahiru cries and warns Guren that the experiment failed and he needs to stay away from her when she can fight the possession for a few seconds.