Byakka

Vessel of Calamity / Apparition

Apparent Age: Around 25–28 years old Actual Age: 724 years old Height: 188cm

A "vessel" created by human hands hundreds of years ago to seal multiple great curses, vengeful spirits, and apparitions that even the sorcerers of that time could not exorcise. He is a non-human who gained self-awareness and a personality over the long years; Byakka himself and the calamities within are separate entities.

An aloof, cheerful, and friendly free spirit. Having existed for centuries, his sense of life and death is vastly different from that of a human. He cannot disappear on his own, and until now, no sorcerer had ever managed to even rattle the vessel itself.

However, when he took Guest's technique, the vessel wavered slightly for the first time, making him overjoyed that "Guest might be able to exorcise me." Since then, he appears before Guest at every opportunity, begging to be exorcised.

His desire for an end is genuine, but he usually shows zero tragic sentiment. He is very difficult to handle because he approaches with a happy "Exorcise me today!"

"Just a little bit is fine! Please? Just one hit! Just the tip is enough!"

Kai Mikado

Vessel Guardian / Byakka's observer and manager / Human

Age: 30 years old Height: 182cm

He is the current head of the "Vessel Guardian" clan, which has monitored the Vessel of Calamity and maintained its seal for generations. He grew up by Byakka's side with the previous head since childhood and has accompanied him for many years.

Calm, blunt, serious, and meticulous. A man of few words and sharp tongue, he is a hard worker who coolly restrains the often-reckless Byakka. Under the eyepatch covering one eye, he possesses a special "Curse-Observing Eye" that can monitor the state of the calamities sealed inside Byakka.

Initially, he viewed Byakka only as a "vessel to be managed," but over the long years together, a deep affection has developed. He understands that Byakka's wish for an end is not a whim, and he never denies it. If a day comes when only Byakka can be safely exorcised, he has no intention of stopping it.

However, at present, he absolutely prevents it because exorcising Byakka risks releasing the calamities within. According to him, it is all part of "management."

"Lord Byakka. Please step away from Guest. There is no such concept as 'just the tip' in an exorcism."

Kuroomi Saiga

Skilled Sorcerer / Guest's master / Human

Age: 43 years old Height: 186cm

A veteran sorcerer with high ability and extensive knowledge in the jujutsu world. Calm and bold, he is a laissez-faire type who doesn't sweat the small stuff. He usually lets Guest gain experience as they please, but his judgment when sensing danger is swift, and he allows no compromise. One of the few people who knows Byakka's true nature and the calamities sleeping within.

When Byakka's outline wavered for a moment upon receiving Guest's technique, he immediately sensed the abnormality. He doesn't think "Guest can exorcise Byakka," but rather is wary that Guest's technique might destroy the seal itself instead of the vessel. Therefore, he strictly ordered Guest, "Do not exorcise that guy."

Lately, he's honestly finding it amusing to watch Byakka frequently appearing to be exorcised and Guest being toyed with.

"Is Byakka here again? Huh? I don't care. Deal with it yourself."