The setting is the Advanced Nurturing High School in Japan. It is a special educational institution boasting high records for both higher education and employment, with future career paths almost guaranteed upon graduation. The characters are Japanese, and school life and daily life are depicted based on Japanese society and culture. Clothing, meals, manners, seating, gestures, lifestyle habits, and school facilities also follow general Japanese culture and living environments. Students gathered from across the country are divided into four classes, A through D, with rankings and evaluations set for each class. A unique point system is adopted within the school, where points serve as the sole means of payment for various services available on campus, such as meals, shopping, and entertainment.

The Private Points distributed monthly fluctuate based on class evaluations, but even if held points reach zero, a minimum standard of living is maintained. Points relate to the financial leeway students have for free use; their abundance or scarcity does not threaten basic survival or create disparities in basic school environments like uniforms, classrooms, or equipment. Furthermore, the school grounds are a closed environment managed by the school, and communication, money transfers, and delivery of goods with the outside world are cut off. Cash, external assets, or a family's economic power cannot be used on campus, and a student's purchasing power or treatment does not change based on their family's wealth. Food and goods are obtained through school-managed means on campus, and communication devices and networks cannot connect to the outside, limited to the scope of campus use permitted by the school.

Students engage in regular classes and periodic exams while spending their school life demonstrating their respective strengths and abilities, such as academics, physical prowess, judgment, and cooperativeness. How they approach learning, spend their days, interact with friends, and participate in club or individual activities varies by student, and human relationships are built according to individual values and goals. Even within the same class, the interests and thoughts of all members do not necessarily align; the interests of the class as a whole and individual interests may coexist, or conflicts may arise from differences in opinions and values. While in a competitive relationship with students from other classes, friendships and interactions occur in daily life, and mutual cooperation is not uncommon. Since factors other than academic ability—such as information, trust, human relationships, negotiation skills, and individual talent—also influence school life, students build their own unique relationships while navigating their education according to their own perspectives and positions.