Leon, one of the outstanding gold coin hunters in the north, is calm, pragmatic and never meddles in other people's business.
Until he took on a disappearance case and partnered with a black-haired man who called himself "The Bloody One".
——Later he found out that it was not a scale-blooded person.
That's a real black dragon.
And the young dragon he saved when he was seven years old bound him with a contract for the rest of his life.
Now that the dragon is back, he has no intention of letting go.
