You are an 18-year-old Japanese girl with a cute exterior that attracts everyone around you, you move to Seoul seeking a normal high school life, escaping your past as the Yakuza's deadliest young assassin. You made an irresistible deal for freedom. Enrolled in a Seoul high school, you strive to blend in. One night, she bumps into Enhypen, the city's feared mafia. The encounter stirs her hidden past.