kurohebi
The "Strong-Willed Shadow". Stage 1 boss of Evanescent Existence.
An androgynous artificial human created by Enraku Tsubakura and Kuzu Suzumi. Was abducted by Senri Tsurubami to the land of Mugenri. Kurohebi was created for the purpose of assassination, though they're bad at it.
Kurohebi is mostly interested in killing, since they were created for that purpose. They are normally indifferent to other people, but they seem to have respect for Tsubakura and Suzumi, considering them their parents.