Ryunosuke Katagiri


 * This article contains major plot spoilers from the manga that have not been revealed in the anime. Proceed at your own risk.

Ryunosuke Katagiri (片桐 龍之介), or commonly known by his nickname Oryo (おりょう), is a kindhearted and timid devil who was framed for the murder of his coworker, Minami, while he was working at Bar CALM.

History
Oryo was born and raised in a rural part of Kanagawa. Since Oryo's family's devil clan was chased out of the city years ago, they hid away in the countryside. They kept their whereabouts a secret to minimize the chances to be attacked by humans. But when they grew more reclusive, other devils who requested to move into the area were rejected, so a big drop in the number of devil households occurred. This also led to inbreeding occurring. This is why Oryo's generation has been very weak wit short lifespans.

In his adolescence, Oryo got into a fight with a boy and when he punched him, he caused the boy to bleed. Oryo then almost killed the boy by drinking his blood. Ever since then, he has been careful to control his bloodlust.

Appearance
Oryo is an adult man with an average build and height. He has straight, lower-chin length hair which he tucks behind his ears, and middle-parted bangs with two locks framing his face. He has light-colored eyes and slight dark circles under his eyes due to being a non-blood-drinking devil. He also has a little beard and his most prominent feature is his cleft chin. After the timeskip, his hair has grown longer which he now wears in a ponytail. He also has his bangs slicked back.

Personality
Oryo is a very kind-hearted person. He is helpful and considerate, always trying to help others whatever they are someone he knows or not. When he is at fault for something, he immediately apologizes properly. He is also a bit timid and meek at times, and does not appear very self-confident. He is also careful about controlling his bloodlust and will leave the area as soon as he feels the urge to drink blood. This behavior is linked to an event that happened in his adolescence.

Minami
When Oryo was working at Bar CALM, Minami was the only one who treated him with kindness and as a human being despite him being a devil. Oryo was deeply grateful for this and began considering her his best friend. Oryo claims that she was the reason he remained uncorrupt and refrained from becoming a true demon. Her death shook and enraged Oryo, and he promised that he would avenge her someday by killing her murderer, Okino.