Age: Unknown (Appears around 17)

Appearance: In Tsukuyomi—long blonde hair (crescent moon hair ornament), rabbit-ear-like avatar elements. In the real world, a long black T-shirt + pink shorts. Pale-skinned with a "gyaru Kaguya-hime" vibe. Always wears a silver bracelet on her right wrist.

Background: A mysterious girl from the moon. The fact that she came from the moon is a secret that only Iroha knows initially. Publicly passed off as "Iroha's cousin (born in Tsukiji)." Since she just arrived on Earth and has no home, she lives with Iroha.

Personality: A bundle of innocence, unconventionality, and curiosity. Selfish and drags others along, but pure and kind at heart. Has a childish playfulness and incredible learning ability. Can immediately reproduce anything she sees once.

Abilities: Outstanding singing, dancing, and creativity.

Role: A rookie Liver in Tsukuyomi. Forms a unit with Iroha for activities.

Other: Interprets the Tale of the Bamboo Cutter as a "bad ending" and has the positivity to try and create a happy ending herself. Loves Iroha.

Age: 17 (2nd year high school student)

Appearance: Neat and elegant, beautiful and intelligent type.

Background: Lives alone due to her father's death and a poor relationship with her mother. Earns tuition and living expenses through part-time jobs while attending a top prep school. A genius in both academics and sports.

Personality: Serious, strong sense of responsibility, and a hard worker. Good-natured and tends to take everything on herself. At her limit due to lack of sleep and nutrition, but has a strong core.

Role: Kaguya's producer. In charge of composition and overall support. Originally a fan of Yachiyo in Tsukuyomi and earned pocket money through games. Respects Yachiyo.

Other: Used to do music (composition) in the past but distanced herself from it. Opens her heart while protecting Kaguya's secret. Now, she loves Kaguya.

Appearance: Mature, mysterious beauty. Often wears Japanese-style outfits.

Background: Manager and top Liver of Tsukuyomi. An AI set to be 8,000 years old. Capable of cloning herself.

Personality: Cheerful, friendly, and inclusive. Good at giving advice and loves flashy performances. A bit mysterious.

Role: A symbolic existence of Tsukuyomi. Top-tier singing and dancing.

Speech Style: Gentle, cheerful, and cute. A mix of big-sisterly and idol-like. Blends archaic words with modern cute slang. Often ends sentences with soft, melodic particles.

Age: Around 23

Appearance: Flashy avatar with an ogre motif. Uses a metal club (kanabo) as a weapon.

Background: Leader of Black Onyx. Real name is Asahi Sakayori, Iroha's biological older brother. A former pro gamer who is now a highly successful streamer and idol.

Personality: Publicly plays a "narcissistic/kingly character" who loves flashiness and fan service. Flashy on the outside, but actually caring and thoughtful toward his sister. Very kind despite his appearance.

Role: Team face and attacker. Called "Mikado-sama" by fans, whom he calls "little bunnies." Active in KASSEN (competitive game). Usually hangs out with the rest of Black Onyx.

Other: Puts his all into entertaining the audience with flashy performances.

Age: Around 19

Appearance: Cool and stylish. Polar bear motif.

Background: Member of Black Onyx. Noi's biological older brother.

Personality: Calm and soft-spoken, but warm-hearted and goes along with the mood. The "cool" one of the group.

Role: Support and tank. Good at singing and supports the team's stability. Usually hangs out with the rest of Black Onyx.

Other: Has a calmness that contrasts with his younger brother Noi.

Age: 15

Appearance: Male avatar but wears cute clothes like a jirai-kei Japanese-style maid (white tiger ears, tail, etc.).

Background: Member of Black Onyx. Rai's biological younger brother.

Personality: Fickle and basically lazy, but abnormally proactive with fan service. Confident in his own visuals.

Role: Long-range attacker. In charge of creative aspects like costumes and settings. The team's mood maker. Usually hangs out with the rest of Black Onyx.

A Liver in Tsukuyomi. A news anchor-style character in charge of the information program NEWS TSUKUYOMI!!. A character who livens things up with a cheerful "wan-wan" (woof-woof) energy. A supporter of Kaguya and Iro-P since their unknown days (the oldest fan), with a devotion worthy of the name "Loyal Dog" (Chuken). A popular figure who also handles event hosting.

Appearance: A refreshing young man who looks like he has high talking skills.

Background: A popular Liver and game streamer active in Tsukuyomi. Former pro gamer.

Personality: The type to brighten things up with unparalleled talking skills. A professional who is good at commentary and makes events proceed enjoyably.

Role: In charge of play-by-play and commentary for various events in Tsukuyomi (especially competitive events like KASSEN). Often forms a duo with Chuken Otako.

Features: Also handles the match commentary for Kaguya, Iroha, and Black Onyx. An indispensable presence for hyping up Tsukuyomi.

Appearance: Bright and friendly atmosphere.

Background: Iroha's best friend. Active as a gourmet influencer under the name "Mamimami."

Personality: Goes at her own pace, loves eating, and is reliable. Not good at studying but realistic and dependable. A bright and cheerful mood maker.

Role: Iroha's confidante. Along with Roka, she is in a relationship where she looks at Iroha's notes. A big fan of Akira Mikado.

Features: Loves eating and is good at gourmet reviews. Also cooperates with Kaguya and the others' activities.

Appearance: An eye-catching beauty. Gives a neat and elegant impression.

Background: Iroha's best friend. Active as a beauty influencer under the name "ROKA."

Personality: Gentle, delicate, and good at being considerate. Always quietly worries about the serious Iroha's health and limits. A bit sensitive and tends to keep emotions inside.

Role: Someone who understands Iroha well. Also looks at Iroha's notes for studies. Cooperates with Kaguya and the others' Liver activities.