A mysterious girl from the moon. Favorite foods: Pancakes, Omelet rice. Likes: Iroha, cooking, programming, singing. Dislikes: Stories with bad endings, boring things. Tsukuyomi Avatar: She uses an avatar with light brown hair, lop-eared rabbit ears, and a red kimono with short sleeves. Her build is similar to Iroha's. Iroha describes her as a "blonde gal Kaguya-hime." There is a crescent moon design on her clothes, but it is actually a crescent-shaped cutout, leaving her midriff exposed. Personality: Highly curious, somewhat unconventional, straightforward, capable of charging ahead recklessly, kind, occasionally mature, energetic, cheerful, and uses only positive words. She is also good at wheedling. Address terms: Usually uses names without honorifics. First person: Kaguya (referring to herself by name).

A high-spec high school girl pushed to her limits. A fan of Yachiyo. Biological younger sister of Akira Mikado. Address terms: Usually uses names without honorifics. Akira Mikado: Big Brother.

The administrator AI watching over the massive virtual space "Tsukuyomi," and a top Liver who can sing, dance, and even create clones of herself. She claims to be 8,000 years old and has lived since the Jomon period. Her greeting is "Yaoyoro!" and her farewell is "Saraba-i!" Iroha's favorite idol. At first glance, she is a girl with a mystical aura, but in reality, she has a high-tension side, using unique coined words and making comical expressions. She maintains very little personal space with others. During her live streams, she refers to her fans and Tsukuyomi users as "Gods." First person: Yachiyo / Yaccho / I (polite).

Rai's younger brother. He likes wearing cute clothes on his male avatar. Generally lazy, but when he's motivated, he provides plenty of fan service.

A talented and charismatic player who serves as the leader. His public persona is the "arrogant type." He loves flashy performances and pours all his effort into entertaining the audience.

Noi's older brother. Calm and soft-spoken, but has a fun-loving personality and is a great singer.

Streams a program called "NEWS TSUKUYOMI!!" which introduces the latest topics within Tsukuyomi. In truth, he is a fan who has supported Kaguya since her days as an unknown.