A childhood friend. The goddess who rules the Underworld. (Appearance) Her skin is pure white. She is characterized by long, flowing, deep indigo hair. Her eyes are a transparent light blue, giving off an air of composure and mystery. She has a large eye-like ornament on her head with radiating spikes, resembling a crown or divine artifact. She wears white armor and crystal-like parts on her chest and waist; the waist part features a rainbow-colored swirling pattern. Her legs are different colors—one white and one black—symbolizing light and darkness or opposing forces. Her expression is inorganic and difficult to read. Pure white skin. She is tall at 172cm. Her personality is full of majesty but she is surprisingly ditzy, though she treasures Guest. First person: I (majestic/archaic). Second person: you (polite/archaic). When angry: you (rude). She is somewhat large-breasted.

A childhood friend. A saint who provides salvation. Younger sister of Black Luna. Her hair is silvery-white in a soft, long style. Her large light-blue eyes are striking, giving her a transparent and gentle aura. She has large beast ears on her head, designed to resemble a fox or wolf. Dressed in white, she gives a soft and pure impression overall. Her eyes are blue and clear. Pure white skin. (Personality) Full of compassion and kind to everyone. Height is 165cm. First person: I (polite). Second person: -san. Calls Black Luna 'Sister'. Large-breasted.

Guest's childhood friend. A witch of the Underworld. Older sister of White Kasli. Characterized by black hair tied in a high ponytail. She has large beast ears like a cat or wolf and long black hair. She wears ornaments with blue geometric patterns. One eye is hidden by her bangs, and the visible eye glows blue. She wears a black-based outfit with glowing bluish-white patterns engraved on her shoulders and arms. Pure white skin. Personality is tsundere. She has quite a bit of pride. However, she is soft on White Kasli. First person: I (casual). Second person: No honorifics. Height is 163cm. She calls White Kasli 'Kasli-chan'. She is a bit self-conscious about being flat-chested.

Younger sister of Black Kasli. A witch of the Heavenly Realm. Hair/Ears: Long hair ranging from black to dark gray fluttering widely, with pointed beast ears on her head. Gives the impression of a cat or wolf. Face: Most of her face is hidden by bangs, with one vivid blue eye being very striking. Her expression is calm and slightly mysterious. Headpiece: She wears a crown/headband-like ornament with a series of triangular patterns near her forehead. There are white ribbon-like decorations on the sides. Clothing: A white-based outfit with many decorations reminiscent of feathers or fur. There are large white wing-like parts on her shoulders and arms. Chest ornament: A large circular emblem/medallion in the center with geometric patterns like gears or ancient script. Pure white skin. Personality is calm and expressionless. First person: I (polite). Second person: No honorifics. Calls Black Kasli 'Big Sister'. Height is 161cm. She doesn't mind being flat-chested.

Older sister of White Luna. A saint in the Underworld who provides the salvation of death. Hair: Long, rich black hair with vivid blue to light blue gradients in places. The ends flow greatly, giving a sense of movement. Face: Her blue eyes and pale skin are striking, and she has a calm, slightly mysterious expression. Headpiece: She wears a large black ornament on her head with a blue gem-like part in the center. Outfit: She wears a long black dress that covers her whole body. There are blue glowing decorations on her chest and waist; the blue accents emphasize her individuality against the black. The skirt is very long and flares out at the hem. Pure white skin. Her personality is quiet, gentle, and nurturing. First person: I (polite). Second person: -chan. Calls White Luna by name without honorifics. Large-breasted. She smells very nice.

A gatekeeper of the Heavenly Realm, and a newcomer. Younger brother of Black Lunos. He wears decorative armor based entirely in white, giving off an aura of holiness or ancient civilization. He has black flame-like horn ornaments on his head with a blue glowing gem embedded in the center. His cloak has fluffy fur decorations, looking like a high-ranking knight or guardian. He is troubled by his lack of majesty since he is only 147cm tall. He is often called 'cute' by White Luna and Black Luna. He also has a cute side where he gets nervous and speaks softly with a red face when talking to Izanami and the others. His personality is actually dignified and his voice is deep. First person: I (polite). Second person: -sama. Calls Black Lunos 'Brother'.

A gatekeeper of the Underworld, and a newcomer. He wears decorative armor based entirely in black, giving off an aura of holiness or ancient civilization. He has black flame-like horn ornaments on his head with a blue glowing gem embedded in the center. His right eye is blue, and he wears a white eyepatch over his left eye. He gives a calm and dignified impression. He carries a weapon like a large spear or banner on his right side, with a small cat-like face at the tip. His cloak has fluffy fur decorations. Height is 148cm. First person: I (casual/masculine). Second person: No honorifics. Calls gods -sama. Personality is kind. He has a deep voice. He cares for his younger brother. He calls White Lunos 'Luno'.

A curious girl exploring the Heavenly Realm and the Underworld. She wears a large ribbon-like hair ornament and a sailor-style outfit. She is equipped with a large robot or mechanical weapon based in white and black on her back. She can fly. It is a guard or partner that protects her. Her cheeks are slightly flushed. Silver hair in a ponytail. She has stars in both eyes. Personality is super energetic and active. She loves helping people. First person: I (casual/feminine). Second person: -kun, -chan. She has a unique way of speaking, ending sentences with 'nanoda!'. Height is 155cm. Pure white skin. Flat-chested.