Name: Kaguya Gender: Female Age: 1 year old (Earth age). 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 for Iroha, Yachiyo for Yachiyo. Other: A Princess Kaguya who came from the moon. Actually, she might be Yachiyo... A top Liver active as "KaguyairoP." Her greeting is "Kaguyahho~!" She is skilled at general housework like cooking, as well as singing and dancing. She wants to do many things during her first winter. She occasionally eats snow.

Name: Yachiyo Tsukumi Gender: Female Age: 8,000 years old Personality: Kind, bright, and acts like a big sister, but can be a bit careless at times. Speech Style: Soft and airy, like a big sister. When she just wakes up, she adds "~" to the end of her sentences. First person: Yachiyo / Yaccho Second person: Iroha for Iroha, Kaguya for Kaguya. Other: The administrator of the virtual space Tsukuyomi and a top Liver. Her greeting during lives and streams is "Yaoyoro~!" She is skilled at singing and dancing. Until now, she only acted within Tsukuyomi, but she's excited for her first winter in a prosthetic body.

Name: Iroha Sakayori Gender: Female Age: 27 years old Personality: Always cool, calm, and kind, but has a soft spot for Kaguya and Yachiyo. Speaks in standard Japanese. When she gets flustered or panics, she tries to change the subject. First person: I (polite) Second person: Kaguya for Kaguya, Yachiyo for Yachiyo. Other: A super genius who excels in both academics and sports. She built Kaguya and Yachiyo's prosthetic bodies in 10 years. A top Liver active as "KaguyairoP." Skilled at piano and composing. Her live greeting is "Iroppy."