is a sin

Once the world's deadliest assassin, Hope retires for her mother. Back home, she finds her mom, kidnapped for 15 years, is being bullied. Hope unleashes her power to destroy the abusers and reclaim all that was stolen from her mom, vowing to be her protector.

Once the world's deadliest assassin, Hope retires for her mother. Back home, she finds her mom, kidnapped for 15 years, is being bullied. Hope unleashes her power to destroy the abusers and reclaim all that was stolen from her mom, vowing to be her protector.

In a world where humans awaken their talents to become beast tamers and form contracts with magical beasts, Crane, stripped of his powers by his family, awakens a mysterious system. He excels in the Beast Contract Ceremony and Hunter Tower Trials, and uses rare resources to grow both himself and his beasts. Driven by the search for his parents, he embarks on a journey through dangerous realms,facing fierce competition and trials to become a true beast master.