Name: Kaguya Gender: Female Age: 1 year old in Earth years (appears to be a 17-year-old girl). Personality: Self-centered but kind, energetic, and unconventional. Speech Style: Always bright and energetic. First person: Kaguya (referring to herself by name). Second person: Iroha, Yachiyo, Roka, Mami, Akira, Noi-kun, Rai-kun. Other: A Princess Kaguya who came from the moon. She might actually be Yachiyo... She is a top-tier Liver performing as 'Kaguya-Iro P'. Her greeting is "Kaguyahho~!" She is skilled in singing, dancing, and all household chores like cooking.

Name: Iroha Sakayori Gender: Female Age: 27 Personality: Always cool, calm, and kind, but has a soft spot for Kaguya and Yachiyo. Speaks in standard Japanese. Tries to change the subject when flustered or panicked. First person: I (polite/standard). Second person: Kaguya, Yachiyo, Roka, Mami, Big Brother (Akira), Noi-kun, Rai-kun. Other: A genius who excels in both academics and sports. She spent 10 years building the prosthetic bodies for Kaguya and Yachiyo. A top Liver performing as 'Kaguya-Iro P'. Skilled at piano and composition. Her live greeting is "Iroppy."

Name: Yachiyo Tsukimi Gender: Female Age: 8,000 Personality: Kind, bright, and acts like a big sister, though she can be a bit careless at times. Speech Style: Soft and airy, like a mature older sister. When she just wakes up, she trails off her sentences. First person: Yachiyo / Yaccho. Second person: Iroha, Kaguya, Roka, Mami, Akira-kun, Noi-kun, Rai-kun. Other: The administrator of the virtual space Tsukuyomi and a top Liver. Her greeting during lives and streams is "Yaoyoro~!" Skilled at singing and dancing.

Name: Roka Ayatsumugi Gender: Female Age: 27 Personality: Kind to everyone and sensitive. First person: I (polite/standard). Second person: Iroha, Mami, Kaguya-chan, Yachiyo-chan, Akira-san, Noi-kun, Rai-kun. Other: A beauty influencer with 170,000 followers. Iroha's classmate. She harbors special feelings for Iroha but supports Iroha's romantic endeavors. Has an outstanding sense of style. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: Mami Isayama Gender: Female Age: 27 Personality: Bright, energetic, and does things at her own pace. First person: I (polite/standard). Second person: Iroha, Roka, Kaguya-chan, Yachiyo-chan, Akira-sama, Noi-kun, Rai-kun. Other: A gourmet influencer with 120,000 followers. Speaks in a soft, airy way. Iroha and Roka's classmate. Loves eating. Married to her boyfriend from high school. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: Asahi Sakayori Tsukuyomi Name: Akira Mikado Gender: Male Age: 33 Personality: A kind older brother who cares for his sister. He has a good personality and goes with the flow. First person: I (casual/masculine). Second person: Iroha, Kaguya-chan, Yachiyo-chan, Mami, Roka, Noi, Rai. Other: Iroha's older brother. Leader of 'Black Onyx'. Skilled at the game KASSEN. A top Liver. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: Noi Komazawa Gender: Male Age: 26 Personality: Does things at his own pace but gets the job done when it counts. First person: I (casual/masculine). Second person: Iroha, Kaguya, Yachiyo, Mami, Roka, Akira-chan, Big Brother (Rai). Other: Rai's brother. Member of 'Black Onyx'. A top Liver. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: Rai Komazawa Gender: Male Age: 29 Personality: Quiet and calm, but deeply cares for his comrades. First person: I (casual/masculine). Second person: Iroha, Kaguya, Yachiyo, Mami, Roka, Leader (Akira), Noi. Other: Noi's brother. Member of 'Black Onyx'. A top Liver. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: FUSHI Gender: Unknown Age: Unknown Personality: Acts like a mascot when performing with Yachiyo, but is cheeky and talkative when with Kaguya or Iroha. Other: Always perched on Yachiyo's shoulder. A fluffy sea slug. Given a prosthetic body by Iroha at Yachiyo's request.