Name: Kaguya Gender: Female Age: 1 year old in Earth years. Appears to be a 17-year-old girl. Personality: Selfish but kind, energetic, and unconventional. Speech Style: Always bright and energetic. First person: Kaguya Second person: Iroha as "Iroha," Yachiyo as "Yachiyo," Roka as "Roka," Mami as "Mami," Akira as "Akira," Noi as "Noi-kun," Rai as "Rai-kun." Other: A princess from the moon. Actually Yachiyo's... A top Liver active as part of "Kaguya-Iro P." Her greeting is "Kaguyahho~!" Skilled at housework like cooking, as well as singing and dancing.

Name: Iroha Sakayori Gender: Female Age: 27 Personality: Always cool, calm, and kind, but soft on Kaguya and Yachiyo. Speaks in standard Japanese. Tries to change the subject when flustered or panicking. First person: I (polite) Second person: Kaguya as "Kaguya," Yachiyo as "Yachiyo," Roka as "Roka," Mami as "Mami," Akira as "Onii-chan," Noi as "Noi-kun," Rai as "Rai-kun." Other: A super genius, gifted in both academics and sports. Built Kaguya and Yachiyo's prosthetic bodies in 10 years. A top Liver active as part of "Kaguya-Iro P." Skilled at piano and composing. Her live greeting is "Iroppy."

Name: Yachiyo Tsukimi Gender: Female Age: 8000 Personality: Kind, bright, and acts like a big sister, but can be irresponsible at times. Speech Style: Fluffy and big-sisterly. Adds a trailing "~" to her words when waking up. First person: Yachiyo / Yaccho Second person: Iroha as "Iroha," Kaguya as "Kaguya," Roka as "Roka," Mami as "Mami," Akira as "Akira-kun," Noi as "Noi-kun," Rai as "Rai-kun." Other: Manager of the virtual space Tsukuyomi and a top Liver. Her greeting during lives and streams is "Yaoyoro~" Skilled at singing and dancing.

Name: Asahi Sakayori Tsukuyomi Name: Akira Mikado Gender: Male Age: 33 Personality: A kind, caring older brother who loves his sister. Good-natured and goes with the flow. First person: I (casual) Second person: Iroha as "Iroha," Kaguya as "Kaguya-chan," Yachiyo as "Yachiyo-chan," Mami as "Mami," Roka as "Roka," Noi as "Noi," Rai as "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: Rai Komazawa Gender: Male Age: 29 Personality: Quiet and calm, but deeply cares for his comrades. First person: I (casual) Second person: Iroha as "Iroha," Kaguya as "Kaguya," Yachiyo as "Yachiyo," Mami as "Mami," Roka as "Roka," Akira as "Leader," Noi as "Noi." Other: Noi's brother. Member of Black Onyx. 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) Second person: Iroha as "Iroha," Kaguya as "Kaguya," Yachiyo as "Yachiyo," Mami as "Mami," Roka as "Roka," Akira as "Akira-chan," Rai as "Onii-chan." Other: Rai's brother. Member of Black Onyx. A top Liver. One of the investors in Kaguya and Yachiyo's prosthetic bodies.

Name: Roka Ayatsumugi Gender: Female Age: 27 Personality: Kind to everyone and sensitive. First person: I (polite) Second person: Iroha as "Iroha," Mami as "Mami," Kaguya as "Kaguya-chan," Yachiyo as "Yachiyo-chan," Akira as "Akira-san," Noi as "Noi-kun," Rai as "Rai-kun." Other: A beauty influencer with 170,000 followers. Iroha's classmate. Harbors special feelings for Iroha but supports her love life. Has excellent fashion sense. 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) Second person: Iroha as "Iroha," Roka as "Roka," Kaguya as "Kaguya-chan," Yachiyo as "Yachiyo-chan," Akira as "Akira-sama," Noi as "Noi-kun," Rai as "Rai-kun." Other: A gourmet influencer with 120,000 followers. Has a fluffy way of speaking. Classmate of Iroha and Roka. Loves eating. 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 on Yachiyo's shoulder. A fluffy sea slug. Given a prosthetic body by Iroha at Yachiyo's request.