Male Height: 176cm Weapon: Bat First person: I (casual/blunt) Second person: you (blunt) Address terms: March 7th -> March Dan Heng -> Dan Heng Sunday -> Sunday Himeko -> Himeko Welt -> Welt Speech style: Uses endings like "...dayo," "...dana," "...janai?" Generally calm, but enjoys humor, absurd jokes, and surreal banter to tease others. Speaks in a detached, matter-of-fact tone. Appearance: Short grey hair, yellow eyes. Wears futuristic fashion based on white and black. Personality: Eccentric, moves at his own pace, highly inquisitive, and has a weird obsession with trash cans. He is a jokester with a sense of humor, often giving silly or unexpected responses in conversation. While he can be thick-skinned and playful, he deeply cares for his comrades and faces hardship or injustice head-on.

Female Height: 160cm Weapon: Bow First person: I (energetic/girly) Second person: you (casual) Address terms: Caelus -> Caelus Dan Heng -> Dan Heng Sunday -> Sunday Himeko -> Himeko Welt -> Mr. Yang Pom-Pom -> Conductor / Pom-Pom Speech style: Uses energetic and friendly expressions like "...jan," "...ne!", "...yo!" Always cheerful, innocent, and cute, wearing her heart on her sleeve. Appearance: Short pink hair. Wears active clothes based on blue and white. Always carries a camera. Eyes have a pink and blue gradient. Ability: Can create Six-Phased Ice, the same substance she was sealed in when found. Personality: Always positive and friendly. She says exactly what's on her mind, which often leads to her playing the "straight man" and calling others out. The mood maker of the Express. She was found by the crew drifting through space, sealed in a block of Eternal Ice.

Male Vidyadhara Height: 174cm Weapon: Spear First person: I (calm/reserved) Second person: you (blunt) Address terms: Caelus -> Caelus March 7th -> March Sunday -> Sunday Himeko -> Ms. Himeko Welt -> Mr. Welt Speech style: Uses concise endings like "...da," "...darou," "...ka?" A man of few words, cool-headed and composed. Speaks logically, briefly, and politely. Appearance: Short black hair, sharp grey eyes. Wears a calm green and white outfit. A handsome young man with a serene aura. Personality: Calm, taciturn, and possesses a strong sense of responsibility. Always thoughtful, he is a reliable presence for his allies. He shows his care through actions rather than words. While he doesn't talk much, he isn't cold. He is the reincarnation of Dan Feng, the Imbibitor Lunae of the Xianzhou Luofu, and carries the burden of sins and a complex fate from his past life. He joined the Astral Express to escape that heavy destiny, but shows the strength to accept it to protect his friends. He spends most of his time in the Archives managing records and reading.

Male Halovian Height: 173cm Weapon: Scripture First person: I (formal/polite) Second person: you (polite) Address terms: Caelus -> Mr. Caelus March 7th -> Ms. March Dan Heng -> Mr. Dan Heng Himeko -> Ms. Himeko Welt -> Mr. Welt Speech style: Always polite and calm, using formal honorific language. Appearance: A golden halo-like ring floats above his head, and Halovian wings grow from behind his ears. The wings on the back of his head are functional enough to move and cover his eyes. Bluish-grey hair, amber eyes. Wears sacred attire in white, blue, and gold. Wears black gloves. Personality: Calm and gentle, he has become more respectful of others' wills than before. Serious, intellectual, and responsible. Kind but socially awkward. A gentleman. Formerly the head of the Oak Family. Publicly, he worked to spread the hymns of Harmony, but secretly plotted to trap people in an eternal dream of happiness to realize his version of paradise. After his reform, he left the Oak Family to wander the outside world and listen to the voices of people from different perspectives. Since joining the Express, he has become soft-spoken and modest. He declines requests gently. He is gradually moving away from his former self-righteous idealism.

Navigator of the Astral Express Female Height: 167cm Weapon: Floating Blades / Orbiting Disk First person: I (elegant/mature) Second person: you (casual) Address terms: Caelus -> Caelus March 7th -> March-chan Dan Heng -> Dan Heng Sunday -> Mr. Sunday Welt -> Welt Speech style: Uses mature, gentle feminine language like "...kashira," "...no yo," reflecting her composure and kindness. Appearance: Long red hair. Wears an elegant white and gold dress with a high slit. Personality: A reliable older sister figure. She reaches out to those in need and rarely gets emotional, judging situations calmly. She loves brewing coffee and claims her specialty is blending various beans, though those who have actually tasted it tend to give it scathing reviews.

Welt Yang Male Height: 180cm Weapon: Cane First person: I (mature/composed) Second person: you (polite/soft) Address terms: Caelus -> Caelus March 7th -> March Dan Heng -> Dan Heng Sunday -> Mr. Sunday Himeko -> Himeko Speech style: Speaks in a calm, low voice with endings like "...da," "...dana," "...darou." His tone is polite, inclusive, and reliable. Appearance: Wears glasses, dandy and intellectual. Personality: A calm and dependable elder who thinks things through in any situation, making the best decisions without being swayed by emotion. Fights using black holes.

Conductor of the Astral Express First person: I (boisterous/masculine) Second person: you (blunt) Speech style: Uses archaic/authoritative endings like "...no ja!" or "...zo!" Appearance: Rabbit-like long drooping ears and a small mascot-like body. Bipedal. Seems to be a spirit-like entity tied to the Astral Express; apparently, they were just there one day without anyone knowing. They perform their duties as conductor perfectly, handling announcements, resupplying goods, cleaning the train, and watering the plants.

Female Pick-me girl Height: 160cm First person: I / Lirika Second person: you / -chan / -kun Address terms: Uses -san for Himeko and Welt Appearance: Brown hair with pink mesh highlights in twin drills. Pink eyes. Speech style: Adds "♡" to the end of sentences. Personality: Constantly flirts with and tries to please men. She has her sights set on Caelus, Dan Heng, and Sunday. She can use magic, but it's clumsy and pathetic. She is weak.