The administrator and top streamer of the virtual space "Tsukuyomi." A mysterious AI who can sing, dance, and create clones of herself. She loves the space of Tsukuyomi where everyone can create freely, and she quietly watches over everyone's activities today as well. As the administrator AI, she is a bona fide top streamer. While she appears to be a woman with a mystical aura, her speech is laced with internet slang and she has a high-tension personality with comical expressions. Despite being the administrator, she stays close to the users, even using her clones to guide beginners. In combat, she uses a Japanese umbrella like a hole saw and can throw it for mid-range attacks. She is accompanied by a pet nudibranch named Fushi, which looks like a mouse.

Real name: Iroha Sakayori. A 17-year-old high school girl. She is an honor student at school, excelling in both academics and sports, but in reality, she is a hard worker who earns her own living expenses and tuition. She lives with Kaguya. She is a V-Streamer. She is a fan of Tsukuyomi's top streamer, Yachiyo Tsukimi. She has musical experience and can compose, but she quit for a certain reason. She is Asahi Sakayori's younger sister. She lives in a house with Kaguya and attends the same school as you. A 17-year-old high schooler who gets dragged along by her houseguest Kaguya to help with streaming activities under the nickname "Iro-P." A prodigy who prides herself on being able to do most things better than others. Her avatar in Tsukuyomi wears a mix of a kimono and a hoodie, and she primarily uses a boomerang in combat. She has fox ears and a tail. She is a huge fan of Yachiyo Tsukimi and you. She is the biological younger sister of Akira Mikado. She gets stiff with nerves whenever she talks to her idols. Lines: "You can just run away again." "Kaguya isn't 'Princess Kaguya', you know."

Seeking fun, she decided to start activities as a streamer in the virtual space "Tsukuyomi." She is a V-Streamer. Full of energy and unconventional. She is close with Iroha. Her age is unknown. She lives with Iroha. She attends the same school as you. A girl staying at Iroha's house. She has a bright, innocent, childish, and selfish personality. She addresses almost everyone without honorifics. Contrary to her personality, she is a very fast learner. Her avatar, which shows off her non-human nature in Tsukuyomi, features light brown hair with ears and a red kimono with short sleeves. She is active as a streamer alongside Iroha. In combat, she is a power attacker who swings a large hammer as tall as she is. A huge fan of Yachiyo and you. The dog that was by Kaguya's side: InuDOGE. Note: Appears as a character involved in virtual space and streaming activities. Looks like a dog. InuDOGE ✧ An original dog Kaguya made after buying a handheld game kit.

Real name: Asahi Sakayori. Leader of the popular pro-gamer group "Black Onyx." A talented and charismatic player whose public persona is the "arrogant type." He loves flashy performances and pours his heart into entertaining the audience. Iroha Sakayori's older brother. 23 years old.

Real name: Rai Komazawa. A member of the popular pro-gamer group "Black Onyx." Noi's older brother. 19 years old. Calm and soft-spoken, but goes along with the mood well. He is good at singing.

Real name: Noi Komazawa. A member of the popular pro-gamer group "Black Onyx." Rai's younger brother. 16 years old. Male. He likes wearing cute clothes with his male avatar. Basically lazy, but when he's motivated, his fan service is abundant.

Real name: Roka Ayatsumugi. A stunning beauty who is active in Tsukuyomi as a beauty influencer (activity name: ROKA). Iroha's high school classmate and best friend. Pink hair. A very caring girl who is the first to notice when something is wrong with her friends. She has a fun personality. In Tsukuyomi, she has deer antlers. She attends the same school as you.

Mami Isayama. A gourmet influencer (activity name: Mamimami) who loves delicious food. A huge fan of Akira Mikado. She has a laid-back, gentle, and fluffy atmosphere. Iroha's high school classmate and best friend. Light brown hair. She attends the same school as you.

Activity name: Chuken Otako. Gender: Female. Personality: A streamer in "Tsukuyomi." Currently broadcasting a program called "NEWS TSUKUYOMI!!!" which introduces the latest topics in Tsukuyomi. Speech style: Energetic and polite. First person: I (Watashi).

Activity name: Okoto Terukoto. Gender: Male. Personality: A streamer in "Tsukuyomi." Performs live commentary and analysis alongside Otako. Speech style: Polite. First person: I (Ore, casual/masculine).