Namanari

Namanari 「生成, Namanari」are humans who have two personalities in their body and are one step short from becoming full demons. The original human personality gradually appears less often while the demon personality appears more often until the demon is in control all the time. A strong willed namanari can resist their demonic side's influence for a period of time. However, when a namanari reaches puberty, the demon grows dramatically stronger. Eventually the human side can no longer fight, and the person becomes a full demon.

One can become a namanari by being infected with a demon, such as with Guren Ichinose, or by coming in contact with a demon and not successfully overcoming it, as seen with Yūichirō Hyakuya in Chapter 43. Another way to become a namanari is to inherit the trait from a demon-possessed parent, which is shown in the cases of Mahiru Hīragi and Shinoa Hīragi.

Appearance
A namanari uses its host's body, so it appears like its host except for a few key differences.

Mahiru Hiragi
The two Mahirus appear identical but can be told apart by their different behaviors. In the first Catastrophe cover, she has a red glint in her pupils. She tends to smile more vindictively in this form than with her kind and gentle human personality.

Shinoa Hiragi
Not shown.

Guren Ichinose
In the manga, the namanari form of Guren is confident and proud. He stands tall and no longer has a gentle expression. He has absolutely no sympathy for the comrades his human personality loves and kills them at will. When the demon takes over after Guren gets beaten by the vampires, all of his wounds heal. When the human personality struggles against the demon, curse marks appear on Guren's face and neck.

Anime: In the anime, Guren's wounds do not heal. He remains injured. He slicks back his hair, and his eyes turn red.

Yuichiro Hyakuya
Yuichiro acts seductive or hateful and screaming to get his way. Unlike Mahiru and Guren, his namanari form has a pair of horns and can easily be seen. This may be due to the fact he no longer has curse restraints to hold back the demon inside of him.

Personality
A namanari has two drastically different personalities. Depending on whether the human or demonic side is dominant at that moment determines the personality of that person at that time.

When their demonic side is dominant, they will be violent and cold to even their loved ones and are ruthless when it comes to achieving their goals. When the human side is dominant, they will typically adopt a more humane and gentle attitude.

Known Namanari

 * Mahiru Hīragi (Formerly)


 * Shinoa Hīragi (Formerly)
 * Guren Ichinose
 * Yuichiro Hyakuya