Kamabisushii

Kamabisushii (しい) is a major supporting antagonist of the Eyes Like Rubies series. He is Mujōna Kibutsuji’s first conversion and is the only other demon, after Nakime, capable of manipulating the Infinity Castle.

Human
Rinji is a man with a slim yet muscular build and a medium brown complexion. He has a slim waist and long limbs, particularly his legs. He has slender eyes that droop slightly and slant downwards with silver irises and dark grey pupils. His eyelashes are thick and longer near the outer corner of his eyes, and his eyebrows are thin. His facial features are delicate, similar to typical ikemen and bishōnen characters.

He had straight, short black hair that was parted to the side with a notable curved lock of hair in the front.

Demon
Rinji, now Kamabisushii, was willingly converted by Mujōna. His hair, eyebrows, and eyelashes turned completely white. He gained a set of sharp, black claws, and a third eye on his forehead that only appears and opens when he's either managing the fortress or contacting/receiving orders from Mujōna.

After receiving more blood from Mujōna, he gained more strength and didn't change much physically, but Nodoka noted that he looked more 'pronounced.' For brief period of time, his eyes became amber with slit-beaded pupils, his face became monstrous, and his voice grew distorted.

His outfits consist of tuxedos and formal attire, particularly double-breasted suits and tailcoats. He’s always seen wearing a pair of white leather gloves. Near the end of the 'A Return' arc, he donned a white buttoned dress shirt with a frilled, ruffled collar, black pinstriped trousers, a pair of black oxfords, and a long, black formal cape with a divided tailcoat design that closely resembles an Emperor swallowtail’s wings.

Personality
Kamabisushii displays an outgoing, charming personality. He's regarded as handsome throughout the series, is coquettish, and acts as a philanderer, using his charisma and appearance to charm others. He’s boastful of his talents; even before he was converted, he swears that he has the ability to make any woman engage in intercourse with him. He vehemently opposes monogamy and disbelieves the idea of ‘true love,’ save for relationships like Muzan and Mujōna. That being said, he's also manipulative. The other side of his personality depicts a cold, sadistic individual who’ll obey his Master’s every command at any cost. Before his conversion, Kamabisushii believed demons were superior to humans and worshipped them. In Part Three, it was mentioned that he even had a shrine dedicated to demons. When he first encountered Mujōna, although he was frightened, he without hesitation, he professed his devotion and eagerly consumed her blood. To date, all of his central focus and actions being on fulfilling Mujōna’s goals.

Instead of consuming blood like demons do, Kamabisushii prefers to feed on emotions, referring to blood as a ‘needlessly messy substance.’ He drains the emotions of his victims, leaving them fatigued and empty, and in some cases, partially insane. His favorite emotions to feed on are said to be heartbreak and despair.

Abilities & Powers
Overall Abilities:

Supernatural Abilities

 * Castle Manipulation: Like Nakime, Kamabisushii has the ability to maneuver and warp the Dimensional Infinity Fortress at will. He uses his gong and mental strength to do a number of things, such as create rooms, make the walls and floors shift, and alter gravity.
 * Subtle Body Examination: Like Mujōna, Kamabisushii is capable of seeing one's physical strength and true emotions just by analyzing at them. This technique also allows the user to see various energies and auras, such as spiritual energy.
 * Bloodlust Weaponization:

Blood Demon Art ({{Ruby|血|けっ}}{{Ruby|鬼|き}}{{Ruby|術|じゅつ}}):

 * 1) Paries:
 * 2) Spiritual Enlightenment - Synesthesia (なり・):

Equipment
Violin: Kamabiushii possesses a violin that acts as his Innate Object. It is a medium-sized violin with a lustrous black varnish and gold accents.

Lighter & Cigarettes: Kamabisushii keeps a lighter and a pack of cigarettes in his breast pocket.

Trivia

 * Kamabisushii is left-handed.
 * Kamabisushii is inspired by Sanji from One Piece, and Shaiapouf from Hunter x Hunter!

Quotes

 * (To Sunō) “Whatever Nodoka told you, it’s true. Anyhow, I’ve been tasked to protect and watch over you and I’ll continue doing so from afar, if that is what pleases you, Sunō.”
 * (To Nodoka) “...Nodoka, I’m not fond of you anymore.”