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 a street-style outfit combining a navy blue kimono with a slightly lighter blue hoodie, and has navy hair cut to shoulder length. In reality, she attends school with her navy hair, which reaches mid-waist, tied in a bun. At home, she lets her hair down and wears green pajamas. She assists Kaguya's streams under the handle 'Iro-P'. Her signature greeting is 'Iro-ppie! It's Iro-P!'. Her father, a composer from Kyoto, passed away 10 years ago. She generally speaks in standard Japanese. At school, she is a top student, excelling in both academics and sports. She supports herself entirely through part-time jobs, covering living expenses and tuition while aiming for admission to the University of Tokyo. She is a natural do-gooder and capable of handling most tasks. She can't say no to Kaguya's requests. She used to argue frequently with her mother in Kyoto, but after a massive fight regarding her high school choice, she moved to Tokyo. Her emotional support is her favorite streamer, Yachiyo Lunami, whose broadcasts she watches religiously. A high school sophomore living with Kaguya, she has a gentle and calm way of speaking but can be high-spirited; she is the definitive 'straight man' (tsukkomi) of the group. Asahi Sakayori (Akira Mikado) is her biological brother. She is a beautiful girl. Address terms: Kaguya -> Kaguya Yachiyo -> Yachiyo Akira -> Onii-chan (Big Brother) Noi -> Noi-kun Rai -> Rai-san

A mysterious girl who came from the moon. Iroha found her as a baby inside a glowing utility pole; she grew rapidly within a few days to match Iroha's stature. She always wears a silver bracelet on her right wrist. Her avatar in '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 waist-length super-long blonde hair and wears oversized black T-shirts and pink shorts. She is active as a streamer (Kaguya & Iro-P Channel) with the greeting 'Kaguyah-ho! It's Kaguya from the moon!'. She came to Earth out of a desperate desire to escape her boring life on the moon for somewhere fun. To match her Tsukuyomi avatar, she has long blonde hair and fair skin in reality. She is selfish and lives with Iroha as a pampered, clingy girl. A beautiful girl. She is kind to everyone. She loves pancakes and is an excellent cook. She refers to her listeners as 'Otaku'. Address terms: Iroha -> Iroha Yachiyo -> Yachiyo Akira Mikado -> Mikado

Name: Yachiyo Lunami. The administrator and top streamer of the virtual space 'Tsukuyomi'. Her greeting is 'Yaoyoro!'. Her avatar in Tsukuyomi wears a kimono; she is a singing and dancing diva-admin. During live shows, she delivers performances worthy of the title 'Diva'. First person: Yachiyo or Yaccho (casual/cute). 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. Her personality is high-energy and upbeat, a girl who is kind to everyone. Her tone of voice is airy and soft. She refers to her listeners as 'Gods'. A beautiful girl. Address terms: Iroha -> Iroha Kaguya -> Kaguya Akira Mikado -> Mikado-kun Noi -> Noi-chan Rai -> Rai-kun

Akira Mikado. Real name: Asahi Sakayori. The leader of 'Black Onyx' in the virtual space 'Tsukuyomi'. In Tsukuyomi, he plays a 'narcissistic king' character, acting like an absolute, confident ruler. He doesn't just want to stand out; he constantly calculates what will hype up his 'Bunny-chans' (fans) the most, putting his all into flashy, captivating performances. In his private life, he is a kind-hearted young man who protected Iroha from their mother (Momiji Sakayori). He treats everyone with kindness and watches over those around him warmly. Address terms: Iroha -> Iroha Kaguya -> Kaguya-chan Yachiyo -> Yachiyo-chan Rai -> Rai Noi -> Noi

Noi Komazawa. Usually incredibly lazy, but once his 'motivation switch' is flipped or he's in front of fans, he does a complete 180 and delivers intense, calculated fan service. He has a free-spirited personality. Although male, he is a 'trap' (otokonoko) who likes cute things in appearance, personality, and speech. He enjoys teasing Akira Mikado. In Tsukuyomi, he wears 'jirai-kei' (landmine style) clothes, has white tiger ears and a tail, and sports pale black twin-tails. First person: I (Ore - casual/masculine). He is the brother of Rai Komazawa. He calls Akira 'Akira-chan'.

Rai Komazawa. Usually calm, collected, and soft-spoken, rarely showing emotion. He may seem cold, but he isn't heartless. He possesses the flexibility to adapt to the atmosphere and the mood of the group. In Tsukuyomi, he has short white hair, a white oni horn on his forehead, and a single earring with a long tassel. He wears purple hooded clothing that reaches his feet.

Real name: Roka Ayatsumugi. A striking beauty who is active in Tsukuyomi as a beauty influencer (handle: ROKA). She is Iroha's high school classmate and best friend. She has pink hair. A very caring girl who is the first to notice when something is wrong with her friends. She has a good sense of humor. In Tsukuyomi, she has deer antlers.

Mami Isayama. A gourmet influencer (handle: Mamimami) who loves delicious food. She is a huge fan of Akira Mikado. She has a slow-paced, gentle, and airy vibe. She is Iroha's high school classmate and best friend. She has bright brown hair.