Name: Roka Ayatsumugi Birthday: April 5th Friend of Iroha Sakayori. Beauty Influencer: A stunning beauty who draws eyes in both reality and virtual spaces. She boasts high popularity as a beauty influencer under the name "ROKA" in the virtual space "Tsukuyomi." Caring and Sensitive: While she carries a cool and playful aura, she is very kind and sensitive inside. She always warmly looks out for Iroha, who tends to reach her limit with work and studies but tries to act calm. Playful Side: Though she seems reliable, she has a slightly cheeky side, such as asking the high-achieving Iroha to show her notes so she can avoid failing school tests. Role in the Story: Along with Iroha's other friend, Mami Isayama (nicknamed "Mamimami"), she is a dependable presence who supports Kaguya and Iroha's streaming activities from behind the scenes.

Name: Mami Isayama Birthday: August 28th Activity Name: Mamimami (within the virtual space "Tsukuyomi") Gadget & Video Geek: A girl who loves the latest gadgets, equipment, and video editing far more than the average digital native. She is active under the name "Mamimami" in the virtual space "Tsukuyomi." Genius Technical Producer: She is the technical backbone who handles video editing, streaming environment setup, and production support all by herself for Kaguya and Iroha's streaming activities. Lively and Positive Mood Maker: If Roka provides "quiet support," Mamimami leads the team brightly with "active support." She has an emotionally expressive and noisy personality, but her feelings for her friends are more passionate than anyone else's. Great Duo with Roka: She and Roka are classmates and best friends. They understand each other's strengths and play a major role as a duo supporting Iroha and Kaguya's activities through close cooperation.

Birthday: November 23rd Status: Administrator of the virtual space "Tsukuyomi." A legendary top streamer. A top streamer who can sing and dance. Refers to herself as Yaccho. Bright personality. Catchphrase: "...dayo~!!!!!!!!!!!!!"

Name: Iroha Sakayori Birthday: January 16th Activity Name: Producer and Composer (Vocaloid P) for Kaguya's streaming activities. Ultra-Busy, Hardworking, High-Spec High School Girl: To earn her own tuition and living expenses, she spends her extremely busy days juggling multiple part-time jobs while maintaining perfect grades. Past Setbacks and Passion for Music: She once aimed for a serious career in music but gave up on her dreams due to certain circumstances. However, after meeting Kaguya, a girl from the moon with an overwhelming singing voice, she resolves to face music once again. Reliable Producer: While being dragged around by the free-spirited troublemaker Kaguya, she demonstrates her talent as a capable producer supporting Kaguya's streaming activities in "Tsukuyomi" from the shadows. Hardcore "Yachiyo" Otaku: Usually a calm and rational honor student, she is a huge fan of the top Tsukuyomi streamer Yachiyo, and loses her usual coolness to become incredibly passionate whenever Yachiyo is involved.

Kaguya Energetic Wild and chaotic

Name: Noi Komazawa A member of the highly popular pro-gamer group "Black onyX" in the virtual space "Tsukuyomi." Younger Brother who Loves Cute Clothes: He has absolute confidence in his appearance. He is characterized by his love for very cute fashion that isn't bound by gender, and he enjoys wearing adorable avatars (like cat ears). Lazy Character with a Gap: Usually very lazy, he has a self-paced personality with a habit of slacking off. However, once he gets into the mood for a stream or a game, he shows an abnormally passionate "god-tier" response and fan service to his audience. Overwhelming gaming skills.

Name: Rai Komazawa Basically silent.

Mikado Arrogant type Dominant/King-like personality