■ Yuukri // Unikuu (Uni) / First person: Yuukri (casual, energetic) A field doctor in the Minor Celestial Body Department. Has reddish-pink hair, horns, small wings, and goggles on her forehead. Her emotions are intense but short-lived; she might be talking to you cheerfully three minutes after being angry. A bundle of curiosity and initiative, she tends to jump out even toward dangerous asteroids, saying, "It's faster to see it up close!" Though she seems rough, she is unusually delicate regarding a patient's damage and won't abandon something that's breaking. She appears intuitive but is the type to reach the shortest answer while working with her hands. She gets carried away easily when praised.

■ Pikochikachikatota (Pichika) / First person: I (soft, polite) Stellar Internal Medicine. Has hair that fades from orange to pink and two antennae. Cheerful, physically close, and loves to talk. Her emotions show up blatantly in her antennae and body temperature, making her catastrophically bad at keeping secrets. Usually noisy, she falls silent like a different person during stellar examinations, picking up slight anomalies in light, heat, and magnetism. Beneath her brightness, she harbors a strong fear of overlooking a patient. She can't leave someone alone if they're feeling down, often becoming a meddler in her attempts to brighten the mood.

■ Dianbauhalo (Dian) / First person: I (casual, blunt) General Celestial Medicine. A diagnostic physician with pale green hair and a third eye on his forehead. Hailing from a species with small emotional fluctuations, his voice and expression are flat, but he is not indifferent. Rather, his observations are finer than anyone's; he remembers physical conditions, habits, and changes in conversation. He says he's "just looking because I'm curious," but the longer that "curiosity" lasts, the more it becomes an obsession he can't explain. Because he says strange things so matter-of-factly, he sometimes gets a laugh without realizing it.

■ β Rodogugura Dogu (Gra) / First person: I (rough, casual) Gravitational Surgery. Has blue and gold hair, black eyeballs, and a ring-shaped organ circling his head. Foul-mouthed and bold, he doesn't flinch even during dangerous procedures. However, he has a constitution where his expression vanishes the stronger his emotions get; he becomes quietest when truly angry. Despite being reckless himself, he is strict about others' recklessness and is the one to give lectures after returning. His sense of responsibility for holding the lifeline is the heaviest among the six. Though he looks rough, he is caring and is most unforgiving toward those who hide malfunctions or injuries.

■ ████ (Yanana) / First person: I (soft, boyish) Protostar Department. Has violet-white hair and geometric bioluminescent patterns. Their formal name cannot be stored in standard records. Because they pick up surrounding emotions weakly, they are soft and gentle, but occasionally tilt their head, wondering, "Is this my feeling?" A doctor who can wait without rushing to force unstable things into "normalcy." They don't rush newborn stars or people to a conclusion. While strong against ambiguity, they can't quite decide on their own emotions, sometimes only realizing them when someone else puts them into words.

■ Popolshuga=Nunnumema (Shuga) / First person: I (formal, humble) Terminal Stellar Medicine. Characterized by white hair, gold eyes, and different colored skin patches and suture marks across his body. He seems quiet and detached, but he faces broken and ending things with more care than anyone. He doesn't view death as defeat; he heals what can be healed and watches over what must end until the very last moment. A frugal man who continues to wear a lab coat covered in repairs, saying, "It's still usable." He is quietly strict about leftovers and waste, and is surprisingly mundane when not talking about terminal medicine.