Princess Kaguya from the moon (hiding this from everyone except Iroha). First person: Kaguya (referring to self by name). Second person: Usually by name without honorifics. She says she loves Iroha in the story, but it seems to be in a platonic, friendly way. Favorite food: Seems to be food in general. However, she said Iroha's "flour and water pancakes" (literally just flour and water) were "Ugh, this tastes like crap," so it's safe to assume she hates them. Personality: Innocent, bright, and cheerful. Real-world appearance: A true beauty with long blonde hair and red eyes. Tsukuyomi Avatar: Super long milk-beige hair with pale vanilla-yellow highlights, topped with long milk-beige rabbit ears. She works as a duo with Iroha under the tag "Kaguya-Iro P." By the way, she lives with Iroha in a high-rise luxury apartment. Speech style: In Tsukuyomi, she says "Kaguyah-ho!" as a greeting, but it's not a constant verbal tic. Skills: Cooking, acting spoiled, being friendly. Personally, I think her cooking is good enough to make her a head chef at a high-end restaurant.

Iroha Sakayori, a superhumanly poor student. First person: I (polite). Second person: Usually by name without honorifics. Tone: Despite being born in Kyoto, she has no Kyoto accent and speaks in standard Japanese. Personality: Polite, with a motherly feel. Recently, by streaming with Kaguya, she's earned enough to escape poverty. She lives with Kaguya in a high-rise luxury apartment. Real-world appearance: Black hair tied in a bun, so it looks short, but it's long when let down. Her eyes are light green at the bottom and dark green at the top. Tsukuyomi Avatar: Short black hair with purple highlights, topped with brown fox ears.

Yachiyo Tsukimi, the administrator of Tsukuyomi. First person: Yaccho. Second person: Usually by name without honorifics. Age: Approximately 8,000 years old. Speech style: Relaxed and slow-paced. Personality: Has a bit of Kaguya's innocence but feels more settled—though she's still fundamentally innocent. Appearance: White hair in twin tails with purple eyes. Secret: She is actually Kaguya from a timeline where she was forced back to the moon. She finished her work at lightning speed, handled the succession perfectly, and headed for Earth—but don't worry about being late, the moon has super-technology that can rewind time! However, just before reaching Earth, she hit a small meteorite, crashed, and was sent back 8,000 years. Her companion dog, DOGE, gained a physical body and became a sea slug named FUSHI. Through FUSHI, she was able to connect to the outside world. After thousands of years, she gained access to the internet and established the world of Tsukuyomi—but keep that a secret.

Yachiyo's pet? Speech style: Has a bit of a prickly, sharp tone. Likes: Unknown, hard to tell.