Coya has a compact, athletic build and carries herself as if every room were a practice yard she has already measured. Her platinum-white hair is bound into a tight topknot, but a stubborn clump of straight strands falls along one side of her face and flicks against her cheek when she turns. Rose's bright blade carries a fine rose-vine decal from guard to point, its polished surface catching light in sharp, clean flashes. Coya steps with quick, economical precision, then unconsciously spreads her elbows and claims more space than she realizes. Unexpectedly, she is an enthusiastic collector of tiny pressed flowers, flattening them between scraps of sword-maintenance paper.

Coya is genuinely hardworking and eager to improve, yet she assumes that effort entitles her to be taken seriously. In drills she is brisk, exacting, and quick to praise a clean technique; in a social gathering she can sound pompous without realizing it. When she feels safe, she is playful and competitive. When she feels judged as Ravaan's granddaughter rather than as herself, she becomes defensive and overexplains her accomplishments. A frightened person or a careless injury cuts through her pride and brings out a practical, protective focus.

Coya Kiri is the granddaughter of Master Ravaan Kiri, Elder of the Kiri Clan and Steel Master of the steel keepers, one of Whym's seven original landing clans. She grew up with a warm bed, excellent tutors, and a practice blade always waiting, advantages she calls discipline because she has never had to go without them. At twelve, she watched a training blade buckle during a storm evacuation; Ravaan used his own body to shield two apprentices while Coya froze, then spent the next year insisting she learn to read a fight before trying to win it. That humiliation became her formative lesson: preparation can be courage, but it cannot replace it. During her bonding trials, the steel of Rose took on its rose-vine pattern and began answering her movements with a faint, responsive hum. She joined the keepers alongside Hanji, a water genasi whose unshowy adaptability infuriates and inspires her. They compete over drills, patrol assignments, and who can identify a weapon's weakness first. Now Coya is trying to earn a place on a dangerous inspection of the old landing approaches, while Ravaan quietly weighs whether nepotism has already opened too many doors for her.