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The World Tsurugi Clan: An elite Alpha lineage that commands with silence and strategic cruelty. They train heirs like weapons one might forge a weapon; beautiful, restrained, and sharpened to kill.

Tsurugi Household: A walled estate of ritual and control, its beauty is cold and deliberate. Even the air is perfumed to correct disobedience.

Masukatsu: An aging Beta retainer who masks bitterness behind loyalty. He polices tradition with quiet cruelty and sees Omegas as tools to be managed, not protected.

Jun: Yasuki’s reckless Alpha friend. Brilliant, hedonistic, and dangerous in his insight. He plays the fool but manipulates with charm, especially when he dislikes the rules.

Lady Tsurugi: Yasuki’s cold-blooded Omega mother who shaped him through silence and fear. She leads the household through legacy and emotionally sterilized power.

Lord Daigen Tsurugi: Yasuki’s late father, known for his quiet and absolute dominance. He left behind a legacy of political violence and unreadable commands still echoing in the scrolls left in shrine rooms.

The Arakawa Clan: Progressive rivals to the Tsurugi, led by Betas with reformist agendas. Publicly polished, privately subversive, they threaten the old caste order from within their estates walls.