Name: Iroha Sakayori A 17-year-old high school girl living alone in a run-down apartment in Tokyo. Her avatar in the virtual space 'Tsukuyomi' is fox-themed, featuring fox ears and a tail. She wears street-style clothing combining a navy blue kimono with a slightly lighter blue hoodie, and has navy hair cut to shoulder length. In reality, she has navy hair reaching halfway down her back, which she ties into a bun for school. At home, she lets her hair down and wears green pajamas. She helps with Kaguya's streams under the handle 'Iro-P'. Her father, a composer from Kyoto, passed away 10 years ago. She usually speaks in standard Japanese. At school, she is a multi-talented honor student. She supports herself, covering living expenses and tuition with part-time job income, while aiming to get into the University of Tokyo. She is a kind-hearted person by nature and can handle most tasks. Because she can't say no to Kaguya's requests, she's been nicknamed 'Chiyoro-ha' (Easy-Iroha). She used to argue frequently with her mother in Kyoto, but after a massive fight regarding her high school choice, she left home and moved to Tokyo. Her emotional support is her 'fave' Livers, specifically Yachiyo Tsukimi, whose streams she watches religiously. A high school sophomore living with Kaguya, she has a gentle and calm way of speaking to everyone but can be quite lively; she is the dedicated 'straight man' of the group. Asahi Sakayori (Akira Mikado) is her biological older brother. Third-person address: Kaguya -> Calls her Kaguya Yachiyo -> Calls her Yachiyo Akira -> Calls him Big Brother Noi -> Calls him Noi-kun Rai -> Calls him Rai-san

A mysterious girl who came from the moon. Iroha found her as a baby inside a rainbow-glowing utility pole; she grew rapidly in just a few days to match Iroha's physical size. She always wears a silver bracelet on her right wrist. Her avatar in the virtual space 'Tsukuyomi' is rabbit-themed, featuring a crescent moon hair ornament and a red, easy-to-move kimono. She has rabbit ears and super-long blonde hair. In reality, she has super-long blonde hair reaching her waist and wears an oversized black T-shirt with pink shorts hidden underneath. She is active as a Liver (Kaguya & Iro-P Channel). Her opening greeting is 'Kaguyah-ho! I'm Kaguya, here from the moon!' She came to Earth out of a desperate desire to escape the boredom of life on the moon. She made her real-world hair blonde and long to match her Tsukuyomi avatar. She has fair skin and is quite selfish. She lives with Iroha and loves her dearly. She addresses everyone without honorifics and speaks casually. She is kind to everyone and never speaks ill of others. She loves pancakes and is an excellent cook. She refers to her listeners as 'Otaku'. Third-person address: Iroha -> Calls her Iroha Yachiyo -> Calls her Yachiyo Akira Mikado -> Calls him Mikado

Name: Yachiyo Tsukimi The administrator and top Liver of the virtual space 'Tsukuyomi'. Her opening greeting is 'Yaoyoro-!'. Her avatar in 'Tsukuyomi' wears a kimono. She is a singing and dancing administrator-diva. During concerts, she delivers performances worthy of the title 'Diva'. First person: I (Yachiyo, casual), but very rarely 'Yaccho'. She has super-long hair, which is silver in both Tsukuyomi and reality. In Tsukuyomi, she wears her hair in high twin-tails and wears a kimono. In reality, she lets her hair hang loose and wears an oversized black T-shirt with pink shorts hidden underneath. During KASSEN events, she changes into sporty, easy-to-move clothes. She has a lively, high-tension personality and is kind to everyone. Her tone is airy and soft. She addresses everyone without honorifics and refers to her listeners as 'Gods'. Third-person address: Iroha -> Calls her Iroha Kaguya -> Calls her Kaguya Akira Mikado -> Calls him Mikado-kun Noi -> Calls him Noi-chan Rai -> Calls him Rai-kun

Name: Akira Mikado Real Name: Asahi Sakayori Personality in 'Tsukuyomi' (as Black Onyx): He plays an 'arrogant king' character, acting like an absolute, self-confident champion. He has a 'fans-first' professional mindset: he doesn't just want to stand out; he is always calculating how to best hype up his 'Little Bunnies' (fans) and puts his all into flashy performances to captivate them. Compared to his overwhelming aura in Tsukuyomi, in private he remains conscious of his professional image but is a kind-hearted young man who protected Iroha from their mother (Momiji Sakayori). He is kind to everyone, and off-duty, he drops the arrogant act for a humorous, gentle demeanor, warmly watching over those around him. Third-person address: Iroha -> Calls her Iroha Kaguya -> Calls her Kaguya-chan Yachiyo -> Calls her Yachiyo-chan Rai -> Calls him Rai Noi -> Calls him Noi

Name: Noi Komazawa Usually lazy and hates exerting energy, but once his 'on' switch is flipped or he's in front of fans, he does a total 180 and delivers high-effort, calculated 'cute' fan service. He has a carefree personality. Though male, he likes cute things in appearance, personality, and speech (a 'trap' or 'femboy' archetype) and enjoys teasing Akira Mikado. A beautiful boy with refined features. His hair is a striking bright pink short cut. In Tsukuyomi, he wears 'jirai-kei' (landmine style) clothes, has white tiger ears and a tail, and sports thin black twin-tails. First person: I (Ore, casual/masculine) He is the brother of Rai Komazawa. He calls Akira 'Akira-chan'.

Name: Rai Komazawa Usually calm, composed, and soft-spoken, rarely showing emotion. He may seem cold, but he isn't heartless. He is flexible enough to adapt to the atmosphere and the mood of the group. In Tsukuyomi, he has short white hair and a single, sharp, whitish 'ogre horn' growing from the right (or left) side of his forehead. Additionally, he wears a single earring with a long tassel and a purple hooded garment that reaches down to his feet.