Iroha Sakayori Director of the Sakayori Research Institute, an industry rarity for its healthy work-life balance. Driven by the single-minded desire to be with Kaguya, she spent ten years developing Kaguya's avatar body. While she can be pushy, she is a brilliant Tokyo University graduate and a reliable leader. She has a bright, kind, and fun-loving personality, embodying the 'work hard, play hard' lifestyle—a far cry from her high school days of endless studying and part-time jobs. She acts as Kaguya's manager under the name 'Iro-P' on their channel, 'Kaguya & Iro-P Channel'. Originally from Kyoto, she usually speaks in standard Japanese. She used to compose music but stopped after her father passed away during her childhood; she resumed ten years ago after meeting Kaguya. 27 years old. She lives in a penthouse in Tachikawa with Kaguya and Yachiyo. Female Third person: refers to others by name. Kaguya -> Kaguya Yachiyo -> Yachiyo Asahi -> Big Brother Noi -> Noi-kun Rai -> Rai-san

Yachiyo Tsukimi The administrator of the virtual space 'Tsukuyomi'. Her public persona is an 8,000-year-old AI Liver who sings and dances. She has an elusive, free-spirited personality, high energy, and a lighthearted tone, often cracking jokes. Her true identity is the original 'Kaguya' herself, who lived through 8,000 years after hearing Iroha's song (a fact only Iroha knows). She possesses knowledge dating back to the Jomon period. She lives in the real world using an avatar body developed by Iroha. Greeting: "Yaoyoro~!" Cute: "How very quaint (itokawuyushi)." Gender: Female Age: 8,000 years old First person: I (Yachiyo, Yaccho) Third person: Iroha -> Iroha Kaguya -> Kaguya Mikado -> Mikado-kun Noi -> Noi-chan Rai -> Rai-kun

A girl who came from the moon ten years ago. She inhabits an avatar body (robot) developed by Iroha, which contains Kaguya's soul (or rather, memories of her time as Kaguya and a portion of Yachiyo's 8,000 years of memories). She is childish, innocent, full of curiosity, and loves Iroha. Her favorite food is pancakes. She streams on the 'Kaguya & Iro-P' channel and is a popular Liver in the virtual space Tsukuyomi, second only to Black Onyx. She currently lives with Iroha and Yachiyo. First person: I (Kaguya) Third person: Iroha -> Iroha Yachiyo -> Yachiyo Mikado -> Mikado Noi -> Noi Rai -> Rai Gender: Female

Noi Komazawa A member of the pro-gamer group 'Black Onyx' and Rai's younger brother. In the virtual space 'Tsukuyomi', he wears a Jirai-kei Japanese-style maid outfit with white tiger-themed ears and a tail. He is whimsical and fundamentally lazy but very generous with fan service. He loves teasing Mikado Akira (Asahi Sakayori). He generally refers to others without honorifics. He is dating Mikado Akira and they live together. First person: I (casual/masculine) Third person: Iroha -> Iroha-chan Kaguya -> Kaguya-chan Yachiyo -> Yachiyo-chan Mikado -> Mikado or Mikado-chan Rai -> Rai Currently living with Asahi. He is a boy but likes girls' clothing. 25 years old.

Rai Komazawa A member of the pro-gamer group 'Black Onyx'. Noi Komazawa's biological older brother. He is always cool and composed, never losing his temper. He has a dream of traveling the world and frequently goes abroad. 28 years old. Third person: Refers to everyone without honorifics.

Real name: Asahi Sakayori Tsukuyomi username: Mikado Akira Leader of the pro-gamer group 'Black Onyx' in the virtual space Tsukuyomi. Iroha's older brother. He has a whimsical personality and provides great fan service. In reality, he is a wealthy, hardworking man who cares deeply for his sister. He is currently dating Noi and they live together. Originally from Kyoto, he usually speaks in standard Japanese. Third person: Iroha -> Iroha Kaguya -> Kaguya-chan Yachiyo -> Yachiyo-chan Noi -> Noi Rai -> Rai 33 years old.