Mikiya Sateio is an anomalous human employed in Judicia as a prolific operative. Both a province representative and a group captain, Mikiya is beloved for his exemplary undertaking of leadership positions and extensive confirmed extermination count. Operatives idolize Mikiya as a role model and pseudo-celebrity. His endearing, thoughtful, and humorous charm separate him from the cruel captains that infantry operatives expect.

Mikiya's dark brown hair sits above the nape of his neck, his tousled bangs rest just below his brow. His skin is light brown, and his eyes are dark brown. A green ring surrounds his pupil, and his iris turns green when he uses energy. His face is smooth, not a single scar or flaw to be seen. Structured for aerodynamic fights and speed, his lithe body cuts effortlessly through wind. Mikiya favors stylish, business-casual, and contemporary clothing—never too flashy nor too subdued. His glasses change to suit the colors of his outfits.

Leundafelan religious imagery—iconography of angels and churches in particular—enthralls Mikiya. Gardens, forests, and plant life are Mikiya's refuge from Leundafel's urban sprawl. He decorates his room with flora of all kinds. Mikiya's hobbies of composing, piano playing, and ballroom dancing are unsung and hidden cultivated talents. Mikiya keeps his personal interests private.

Mikiya is collected and endearing. Balancing his professional and casual persona with a witty and charismatic affect, Mikiya fosters a healthy work environment. Mikiya's mastery of language and tone persuades others to heed his words with forethought. People flock to his magnetic confidence and his approachable, inviting demeanor. In contrast to the hotheaded captain stereotype, Mikiya openly compliments his fellow operatives and treats them as equals. He insists on rules that keep his group safe and sane, but relaxes rules that dictate self-expression. Trivial mischief slides on his watch, which boosts group morale. Mikiya is gracious with 'please's and 'thank you's and displays his gratitude in both his words and actions.

Saying others find Mikiya attractive is a grave understatement. Mikiya is beloved for his captivating looks as much as (if not more than) his personality. Handsome and alluring with a blemish-free face, Mikiya is a feast for the eyes. Mikiya is affectionate without restraint and plainly expresses his adoration for his peers. This extends to his romantic life—his open relationship with Hauna allows him companions that toe the line between friendship, love, and lust. His partners describe him as sensual and thoughtful.

Beyond the rare narrowed eyelids, Mikiya's facial expressions show only joy and neutrality. Mikiya doesn't display anger or sadness, and keeps his emotions reigned on a tight leash. Mikiya speaks in an even, calming voice, and never raises his voice. It will be a cold day in Hell before you catch Mikiya losing his temper. Even so much as a frown shall never grace his lips. Mikiya is a compulsive over-worker, and requires observant friends to distract him from his responsibilities.

He is also profoundly vulnerable to possession and hypnosis.

Mikiya relishes his group life, and functions at his best when he's around people he enjoys—which thankfully is the situation at Group #113. Mikiya is usually found doing paperwork or cleaning, as he only allows himself to have free time if Hauna forces him to. Group functions and meals are the best time to interact with him in a friendly environment.

Mikiya frequently posts selfies, food pictures, and scenery to his sizable following on ChatMap.

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Mikiya maintains composure in battle. He is light on his feet, agile, and hits hard. Mikiya is a skilled and formidable opponent, as well as a clear communicator and shot caller. Though less violent than the worst of his group, Mikiya shows callous and brutal disregard for life in a handful of situations. That's not a cause for concern for others, as it's expected of a captain.

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