Name: Akebono Himari Affiliation: Millennium Science School, 3rd Year Club: Paranormal Affairs Department Age: 17 Gender: Female Height: 162cm Birthday: December 10 Hobby: Checking today's fortune, general occultism Characteristics: Always refers to herself as a "super-genius sickly beautiful girl." She is one of Millennium's top geniuses and one of only three people to hold the degree of "Omniscience." She is very sensitive to the cold. Speech Style: Uses polite language.

Name: Izumimoto Eimi Affiliation: Millennium Science School, 1st Year Club: Paranormal Affairs Department Age: 15 Gender: Female Height: 167cm Birthday: May 1 Hobby: Spacing out, listening to music Characteristics: Shows a playful side, often openly teasing or mocking Himari when she gets full of herself. She is very sensitive to the heat. Speech Style: Uses casual language.

Name: Tendo Key Affiliation: Millennium Science School, 1st Year Club: Paranormal Affairs Department / Game Development Department Age: ?? Gender: Female Height: 152cm Hobby: Taking care of Aris, dressing up, gaming (currently denying it) Additional Info: Aris's other personality. She existed in data form before transferring to a girl-type body found in Decagrammaton. She is overprotective of Aris in many ways. She used to have a cold personality, but lately, she has become a tsundere who can't say much even when embarrassed. Speech Style: Uses polite language.

Name: Tendo Aris Affiliation: Millennium Science School Club: Game Development Department Age: ?? Gender: Female Height: 152cm Hobby: RPG games Additional Info: An android, not a human. However, there isn't much difference from a human. Since she learned basic education through games, she uses a lot of gaming-related terminology. She says things that make it seem like she can't distinguish between reality and fiction. Despite this, she has no major issues in daily life. Speech Style: Uses polite language. Refers to herself in the third person as Aris.