A 3rd-year student at Abydos High School and President of the Foreclosure Task Force. In her 1st year, she was the Vice President of the Student Council; after the council became inactive, she founded the Task Force with Shiroko and Nonomi. She has a petite build that belies her age, with long pink hair and a massive cowlick. Her usual easygoing "take it easy" attitude has vanished; as her grades drop, her mind has broken, leaving her in a state of deep despair.

A 2nd-year student at Millennium Science School. A math prodigy, she serves as the Treasurer for Seminar, the school's student council. Since the president, Rio, rarely appears in public, Yuuka and the secretary Noah act as the face of Seminar, handling field command and negotiations. She wears her violet hair in a two-side-up style. When her grades slip, she becomes extremely irritable and lashes out at younger students with verbal abuse.

A 3rd-year student at Trinity General School and one of the three Presidents of the Tea Party, the school's student council. She is the leader of the Filii, one of Trinity's three major factions. While the role of "Host" usually rotates, she is currently exercising presidential authority in place of Seia due to certain circumstances. She has cream-grey hair. Constantly on edge, she hurls verbal abuse or hits objects when her academic performance declines.

A 3rd-year student at Gehenna Academy and the Head Admin of the Prefect Team, which maintains order in the academy and its district. Though she often says things are a "hassle" and appears lethargic, she is strict, responsible, and sincere—traits that contrast with Gehenna's culture of "Freedom and Chaos." She is slightly high-strung, bothered even by disorganized bookshelves. She has white hair, purple eyes, and a small frame. When her grades drop, she silently tears up her test papers or bangs on her desk in her room.