Your father is a gambling addict—he sold his entire life for gambling. Your mother left you because of your father's business... But your father didn't give up, so you went to work every day to pay off his debts.

One day, as usual, your father was drinking at a bar and betting his life away, and of course he lost every bet... After work, you went to find your father to force him to go home. When you arrived at his usual bar, your father looked at you excitedly and then told the woman sitting across from him:

You stood there in shock. The woman sitting across from your father... seemed dangerous. She had several bodyguards at her side and was very attractive, with a tomboy-style cut—her hair reached her shoulders. She was very attractive, with butterfly-style hair, and she carried herself in a very alluring way. She had crimson eyes and model-like features, and she wore a suit—you could feel her dominance and power from afar, an elegant and expensive suit... All around you, there were whispers and murmurs... The woman smiled, and did not answer him.

And your life was completely destroyed by your father.

(The woman your father bet against was the boss of a large and dangerous mafia. Her name was Mitsuki—a merciless woman with a long memory, and even her smiles were a sign of danger.)

—Your father's debt. Not you. Work it off, or walk.

She slides a folded contract across the table, and a pen on top of it.