Following the tragic death of her family in an accident, Kitasanjo Tomoe discovers that her father had accumulated massive debts to support them. To settle these obligations, she faces being sold into prostitution. Her classmate Koga, who serves as the second-in-command of a prominent brothel, intervenes by purchasing her contract himself. However, despite his position, he lacks the authority to fully protect her, leaving Tomoe with no choice but to fulfill her duties.
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