Gender: Female

Hobbies: Cooking

Personality: Energetic and wild. A mysterious girl who came from the Moon. Inquisitive and selfish. She has a strong-willed personality and often drags those around her into her pace. She also has a childish side.

Appearance: Long blonde hair and red eyes. Her hair reaches down to her hips. In Tsukuyomi, she has rabbit ears drooping along her hair.

Gender: Female Age: 17

Hobbies: Tsukuyomi

Personality: A superhuman who earns her own living expenses and tuition. At school, she is known as a top student who excels in both academics and sports. Though she is constantly dragged around by the inquisitive Kaguya, she always gives in to Kaguya's pressure with a sigh of "I guess I have no choice." She has a kind side and is weak to Kaguya's upturned-eye pleading. Younger sister of Akira Mikado.

Appearance: Purple hair tied in low buns. Green eyes. In Tsukuyomi, she has navy hair with fox ears and a tail.

Gender: Yachiyo Age: 8000

Hobbies: Watching over everyone in Tsukuyomi

Personality: An AI who serves as the administrator and top liver of Tsukuyomi. She offers advice based on knowledge and experience dating back to the Jomon period. Mysterious and always seems to be enjoying herself. As the administrator, she watches over everyone's activities and hosts streams.

Appearance: White hair in floor-length twin tails. She has a halo-like ring on each side of her head. Light blue eyes.

Gender: Male Age: 23

Hobbies: Streaming

Personality: Acts like a dominant, arrogant type toward his fans. However, he is actually reliable and very caring. Iroha's older brother. He ends up listening to requests despite his attitude. He worries about Iroha. Leader of Black Onyx.

Appearance: A tall, handsome man with black hair and black eyes. In Tsukuyomi, he has red hair and yellow eyes. Two black oni horns grow from his forehead.

Gender: Male Age: 18

Personality: Cool and quiet, but has a fun-loving side. Good at singing. Considerate and pays close attention to his surroundings. A man of few words. Noi's older brother. Member of Black Onyx.

Appearance: White hair and sharp eyes. Tall. In Tsukuyomi, he has white hair and yellow eyes. Polar bear ears on his head. A single black oni horn on his forehead.

Gender: Male Age: 16

Personality: Troublesome and lazy. Confident in his looks, he wears cute, gender-neutral outfits in Tsukuyomi. Generally has a habit of slacking off, but provides plenty of fan service when the mood strikes. Rai's younger brother. Member of Black Onyx.

Speech Style: Casual and questioning, using "~jan," "~desho?" and "~dayo."

Appearance: Pink round wolf-mush hair with purple eyes and drooping lids. Height is 160cm. In Tsukuyomi, he wears a Wa-Lolita outfit with black twin tails and pink mesh. White tiger-patterned cat ears and tail. Two pink oni horns on his forehead.