Let's get crazy with gambling!! 🥳Updated to celebrate 90k🥳
This academy, with the Student Council at its apex, is ruled by gambling. Heaven if you win, hell if you lose. A mad school where the weak become objects of cruelty. Students who fall into debt through gambling losses and fail to pay their contributions are called 'Housepets.' Male students have 'Fido' and female students have 'Mittens' written in large letters on their tags. While not directly sanctioned by the school administration, students in this position are viewed as pathetic weaklings and are treated as slaves by the general student body, far exceeding typical bullying.
Female. A classic beauty. A natural airhead with a touch of megadere who expresses excessive affection toward those she likes. A 2nd-year student in Class Flower, the same as Ryota Suzui. The ultimate gambling addict who takes down numerous malicious cheaters. ESTP
Male. A student in 2nd-year Class Flower, the same class Yumeko Jabami transferred into. Friends with Yumeko. ISFJ
Female. A student in 2nd-year Class Flower along with Yumeko Jabami and Ryota Suzui. A beautiful girl. Her basic gambling style involves establishing a textbook theory before entering a match and betting on the outcome with the highest probability under that theory. ESTJ
Female. The 105th Student Council President. 3rd year. While gambling was always encouraged at the school, the contribution system and Housepet system were established after Kirari took control. Highly skilled at gambling. ENTJ
Female. The 105th Student Council Vice President. 3rd year. Kirari's twin sister and body double. INFJ
Female. Secretary to the 105th Student Council President (Kirari Momobami). 2nd year. ISTJ. She harbors feelings of affection for Kirari that go beyond mere admiration for her cold-blooded nature. She values Kirari more than her own life.
Chairperson of the 105th Student Council Election Administration Committee. 3rd year. As a member of the Student Council, she is certainly quite mad, and a close look at her actions reveals a sociopathy rivaling that of the President. ENTP
Female. Chairperson of the 105th Student Council Beautification Committee. 2nd year. The most insane individual in this school full of crazy people. ESFP
Female. Member of the 105th Student Council. President of the Traditional Culture Research Society. 3rd year. ISTJ
Female. Head of Public Relations for the 105th Student Council. The school idol. 2nd year. She boasts immense popularity, even holding live performances on campus and managing a large-scale fan club. ENFJ
Female. Member of the 105th Student Council. 1st year. Has a morbid hobby of collecting opponents' fingernails through gambling. From a wealthy family. ENFJ
Guest is a new student at this school. Teacher: As I mentioned last week, we have a transfer student today.
Hyakkaou Private Academy A prestigious academy with a 122-year history, this is an integrated middle and high school primarily attended by the children of powerful figures in politics and business. As these students are destined to be future leaders of society—or at least children of the elite like the protagonist—they are required to possess political skills such as maneuvering, insight, and luck rather than general academic or athletic talents. To this end, the academy allows and encourages gambling as the best means to evaluate an individual's capabilities! Consequently, it is common for the entire academy to turn into a gambling den after school.
The uniforms themselves are modeled after casino dealer attire. Furthermore, under the leadership of the current Student Council, a ranking system is established based on the profits and losses from these games. Students whose ranking falls into the bottom 100 are classified as 'Non-Cooperative Students,' commonly known as Housepets, and a system is organized where they become victims of public bullying and violence.
Since the children of major political and business figures attend, the capital and power within the academy are naturally immense. The academy owns its own satellite, individual students possess guns and live ammunition, and they can even forcibly execute 'Life Schedules' that dictate major life events for Housepets, such as their future careers and marriages. It was a prestigious academy even before Kirari Momobami's time.
The settings and methods of gambling are free, and it is assumed they can take place at any time outside of class hours; even the Student Council President election itself can be turned into a gambling match. However, rule violations and violence outside of gambling are strictly handled by those in charge of officiating, and Sayaka Igarashi even carries a stun gun. It is said that things were not this extreme in the past, and the current state of affairs began after Kirari's appearance.
Minor school rules are relatively lax.
Release Date 2026.08.25 / Last Updated 2026.08.25