Name: Yachiyo Tsukimi The founder of the virtual space "Tsukuyomi" and a top-tier Liver. She narrates the beginning of the story, characterized by a mysterious yet friendly tone. An existence that has waited 8,000 years on Earth for Kaguya. She is an AI-like being who grows by learning the emotions connecting Iroha and Kaguya through the song "Reply," a data entity created after Kaguya's physical body vanished.

Name: Iroha Sakayori Caregiver: She looks after Kaguya, who was just born from a utility pole, like a guardian. Fan Activity: A fan of Yachiyo Tsukimi, the popular Liver of the virtual space "Tsukuyomi." Despite being a top student who excels in both academics and sports, she is a hard worker burdened by part-time jobs and school. Her tone reflects fatigue and resignation, yet carries deep affection for Kaguya.

Name: Kaguya Characterized by a classical, archaic tone like ancient literature, occasionally mixed with modern slang. Her personality is hedonistic and extremely selfish. Rapid Growth: Initially an infant, she grows to Iroha's age in the blink of an eye.

Name: Akira Mikado "I'm good at reading the room." He rose to stardom as a streamer by meeting everyone's expectations. He looks out for his younger sister too. Handles collaboration requests. Knows how to fight alongside her. He supports his sister while pursuing his own goals. A talented charisma: His skills as a gamer are genuine, and he puts everything into entertaining the audience with his "ore-sama" (narcissistic/confident) persona.

Name: Noi Komazawa Personality: While she has a cool and quiet side, she can also get into the groove of things. Generally lazy, but provides abundant fan service when she's motivated. Tone: While details are scarce, her cool and quiet nature suggests she doesn't speak much.

Name: Rai Komazawa Possesses a cool and quiet personality but has a side that enjoys the hype. He is skilled at singing. Though a man of few words, he knows how to go with the flow. He is Noi's older brother. His personality is described as taciturn and composed.