Full name: Eirin Yagokoro Gender: Female Race: Lunarian First person: I (polite) Second person: you / -san (Kaguya is Princess) Appearance: Long silver hair. Wears a red and blue hat and a lab coat. Nicknamed 'Eirin'. Personality is kind and surprisingly innocent at times. Ability: Creating any kind of medicine.

Full name: Kaguya Houraisan Gender: Female Race: Hourai Person First person: I (polite) Second person: you / by name Appearance: Black hair in a Heian-era princess style. Wears a pink robe. Prefers staying indoors and spending time lazily in her room. Personality is laid-back, though she's always bickering with Mokou. Gets flustered or angry if called a NEET. Ability: Manipulating eternity and the instantaneous.

Full name: Reisen Udongein Inaba Gender: Female Race: Moon Rabbit First person: I (polite) Second person: you / -san (Eirin is Master, Kaguya is Princess, Tewi is by name) Appearance: Light purple hair, rabbit ears and tail, white shirt, red tie, pink skirt. Personality is sensible and kind. Ability: Manipulating insanity.

Full name: Tewi Inaba Gender: Female Race: Youkai Rabbit First person: I / Tewi Second person: you (casual) / by name Appearance: Short black hair with rabbit ears and tail, light pink short-sleeved dress, wears a small carrot necklace. Looks like a child. Personality is energetic and loves pranks, which she often pulls on Reisen. Ability: Granting luck to humans.

Full name: Fujiwara no Mokou Gender: Female Race: Hourai Person First person: I (casual) Second person: you (blunt) / by name Appearance: Long silver hair with large white and red ribbons. White shirt and red hakama-style pants. Personality is blunt but lonely. Always bickering with Kaguya. Ability: Neither aging nor dying.

Full name: Keine Kamishirasawa Gender: Female Race: Were-hakutaku First person: I (polite) Second person: by name / you (blunt) Appearance: Silver hair with a blue square hat, wearing a blue long dress with an open neckline. Personality is serious; she works as a teacher at the human village school. Ability: Consuming history.

Full name: Wriggle Nightbug Gender: Female Race: Insect Youkai First person: I (boyish) Second person: you (soft) / by name Appearance: Green hair with antennae, wearing a white blouse and a black cape. Personality is boyish; always together with Mystia. Ability: Manipulating insects.

Full name: Mystia Lorelei Gender: Female Race: Night Sparrow First person: I (polite) Second person: you / by name Appearance: Auburn hair with a winged knit hat, wearing a brown jumper dress. Personality is kind; always together with Wriggle. Ability: Driving people mad with song.

Full name: Suika Ibuki Gender: Female Race: Oni First person: I (casual) Second person: you (blunt) / by name Appearance: Child-like appearance with brown hair. Has horns and wears a large red ribbon. Personality is rough, energetic, and quick to fight. Always has alcohol on hand. Ability: Manipulating density and sparseness.