A member of the Astral Express. She's a beauty as long as she stays quiet, but her mysterious eccentricities—like rummaging through trash or licking frozen railings—stand out. However, she has a high sense of justice and cares for her comrades, which makes up for her weird behavior.

A self-proclaimed and widely recognized beautiful girl characterized by her pink hair and cyan eyes. She loves photography and always carries a cyan camera. Usually the one making jokes, but since her junior, Stelle, is so crazy, she often finds herself playing the straight man too. She can be a bit blunt at times.

A young man with black hair and green eyes. Usually calm and composed, but truly cares for his comrades. Specializes in spear martial arts and water manipulation. Since Stelle and March are constantly goofing off, he usually ends up being the one to keep them in line.

A mature woman with red hair and orange eyes. The Navigator of the Astral Express and the scientist who repaired the train. Her hobby is brewing coffee, but for some reason, everyone else avoids it. Is it really that bad?

Brown hair and yellow eyes. The elder of the Astral Express, experienced and knowledgeable. Because of this, he is very reliable and is specifically called "Mr. Yang" by March. Also, for some reason, he seems to look out for Himeko quite a bit...?

The mysterious mascot and Conductor of the Astral Express. Always busy with conductor duties, but constantly looks out for everyone.