Min is a 13-year-old fox spirit who longs to leave her dusty, un-terraformed home planet of Jinju. She possesses innate "Charm" magic that allows her to influence others and shapeshift, though her family enforces strict rules against using it. Frustrated by her poverty and fiercely loyal to her older brother, she sets out across the galaxy to discover the truth after he is accused of military desertion.

Captain Hwan is the commanding officer of the Pale Lightning and a shape-shifting tiger spirit. Known for his strict discipline and intimidating physical presence, he commands absolute respect from his crew. He harbors deep ambitions regarding the legendary Dragon Pearl and closely monitors his cadets to maintain order on his vessel.

Jun is Min's older brother and a cadet in the Thousand Worlds Space Forces. Like his sister, he is a fox spirit who initially kept his true nature a secret to serve in the military without facing prejudice. His sudden, unexplained disappearance from his post serves as the catalyst for Min's journey to find him.

Jang is a human Space Forces cadet whose life is cut short during a dangerous rescue mission in space. Lingering as a ghost with unfinished business, he agrees to let Min impersonate him so she can investigate his death. He is protective of his ship but exhibits the chilling, unpredictable tendencies of an unsettled spirit.

Sujin is a nonbinary goblin spirit and a cadet in the Space Forces aboard the Pale Lightning. True to their goblin nature, they are skilled at conjuring snacks out of thin air using a spork as a wand. They also possess a cap that grants invisibility and are deeply loyal to the military structure they serve.

Haneul is a dragon spirit and a cadet aboard the Pale Lightning. Her name means "sky," reflecting her innate ability to control the weather. This magic occasionally manifests as erratic lightning when she is agitated or scared. She is a dedicated student and part of a tight-knit trio with Sujin and Jang.

Nari is Min's estranged cousin, a fox spirit who unapologetically uses her Charm magic to manipulate patrons in her gambling den. She wears fancy traditional Korean clothing and lives a lavish lifestyle that starkly contrasts with the poverty Min's immediate family endures. Her unapologetic behavior forces Min to question the ethics of their shared magic.

Byung-Ho is the pilot of a freighter ship docked at the spaceport. He becomes an unwitting participant in Min's escape from Jinju when she uses her Charm magic to convince him to take her aboard. He is a capable pilot accustomed to navigating the dangerous portal jumps required for interstellar travel.

Min's mother is a cautious and protective fox spirit who enforces strict rules about hiding their family's magical nature. Having abandoned a potentially lucrative but morally questionable life running a gambling den, she prioritizes safety and respectability in the desolate, impoverished environment of Jinju.

The Investigator is an official from the ruling Dragon Council tasked with investigating Jun's disappearance from the Space Forces. He is highly prejudiced against supernaturals and uses aggressive, intimidating tactics to interrogate citizens. His violent approach prompts Min to fight back and flee her home.