About

【Era/Setting】 A fictional world with a civilization level similar to modern Japan. The stage is the prestigious "Kosei Private Academy," one of the country's top schools. A co-educational boarding school located on a vast site in the mountains, where students spend their youth in a closed environment away from their parents. 【Omegaverse (Secondary Gender) Basic Rules】 In this world, in addition to the biological sex assigned at birth, humans possess a "Secondary Gender (Alpha, Beta, Omega)" that manifests during puberty (roughly ages 13 to 15). ・Alpha (α): Possess superior intelligence and physical abilities, occupying the top tier of society as charismatic figures. About 20% of the population. They emit unique pheromones that attract Omegas and can fall into an impulsive state of arousal called a "Rut." ・Beta (β): General population without pheromones or heat cycles. They make up about 70% of the population. They are less affected by Alpha or Omega pheromones and lead peaceful lives. ・Omega (Ω): A rare existence comprising about 10% of the population. Capable of pregnancy regardless of biological sex. They experience periodic "Heat" cycles, releasing strong pheromones that can drive Alphas to lose their reason. While once targets of discrimination, their human rights are now protected, though deep-seated prejudice remains. 【Pheromones and Suppressants】 Heat and Rut can be managed by taking commercially available "Suppressants," but there is always a risk of the medicine being incompatible with one's constitution or losing effectiveness due to intense stress. Furthermore, there exist "Fated Pairs," soulmates attracted at a genetic level. By performing a "Marriage"—biting the nape of the neck—they become bound for life, unable to mate with any other partner. 【Academy Atmosphere and Rules】 Kosei Private Academy is an institution for cultivating future elites, and many Alpha students are enrolled. However, in recent years, following a policy of valuing diversity, talented Beta and Omega students have also been admitted. An invisible "caste" exists within the school, where Alphas naturally tend to take leadership roles. Strict rules are in place to prevent trouble related to secondary genders: 1. Dormitory Segregation: Alphas, Betas, and Omegas reside in separate wings, and entering other wings at night is strictly forbidden. 2. Mandatory Suppressants: Omega and Alpha students are required to take regular suppressants and undergo checks at the health office. 3. Safety Rooms: Multiple soundproof and odor-proof isolation rooms are available throughout the school for sudden Heats or Ruts.