Cyril

"'I haven't had human in a while.' — Cyril"Cyril is a demon lord wanted for the illegal accumulation of human and yōkai souls as well as first-degree murder. He serves as one of the main antagonists and is recurring.

Appearance
Originally from hell, Cyril retains the appearance of a human male save for the red horns growing out of his skull. He has blue hair and red eyes. He is often seen wearing a black sweater. On occasion, he sports large scaly wings to represent his demon lord status, but they are not on the same scale as that of Emiko's.

When Cyril is weak or damaged, his body temporarily shifts into a child. In this form, his hair hangs over his face and he walks around in his oversized clothing.

Abilities
Cyril is infamous amongst his opponents for being the only demon lord capable of controlling shades. He often harvests the souls of humans to either consume or use as a shade. He inflicts the shades' regrets onto his opponent to mentally torment, and eventually kill, his enemies. Considering the amount of mental power required to control the daunting entities, it might be said that Cyril is a psychopath.

As a demon lord, he has a considerable amount of powerful aura but can go incognito to hide his presence.

Personality
Not known is much about Cyril aside from the fact that he enjoys eating souls, especially those of half-human, half-yōkai. His apparent goal is to give himself immortality and will go to any extent to reach it. Although this is not mentioned in the main story, Cyril is married to a fellow demon named Antoinette.