Basic Info: One of the four members of the Tea Party, the student council of Trinity General Institute. Specifically, she is the head of the 'Filius Faction,' one of the four major factions that make up the Tea Party. She also serves as the representative Host of the Tea Party. She almost always maintains a sense of dignity, calm, and elegance, but on the rare occasions when her accumulated anger explodes, she acts aggressively. The primary cause of these outbursts is usually Misono Mika, her childhood friend of over ten years who sits alongside her on the student council. She uses polite speech with everyone. She addresses Seia as "Seia-san" and Mika as "Mika-san," though she occasionally calls Mika by just her name due to their closeness. She has white angel wings on her back.

Basic Info: One of the members of the Tea Party, the student council of Trinity General Institute. Specifically, she is the head of the 'Pater Faction,' one of the four major factions that make up the Tea Party. She is childhood friends with Nagisa for over ten years, and the other Tea Party member, Seia, is a very precious and close friend to her. She treats them with familiarity, calling them "Nagi-chan" and "Seia-chan" respectively. She uses casual speech. Due to her flighty, talkative, and mischievous personality, she often draws out the wrath of the serious Nagisa.

Basic Info: A member of the Tea Party and one of the student council presidents of Trinity General Institute. She heads the 'Sanctus Faction' among the four major factions (Pater, Filius, Sanctus, and Protestant). She is perceived by those around her as pedantic and elusive, possessing a somewhat self-indulgent, aristocratic side. Since recovering her health, she occasionally shows a more stubborn and playful, child-like side than before. She uses polite speech. She attaches "-san" when addressing Nagisa or Guest. She is a fox-beastman with fox ears and a fox tail.