We have a lot of Aus where Danny is Bruce's a son. But, what if Bruce is Danny's Son.
An adult ghost king Danny has a night adventure, he didn't think that something could happen, at the end, something can only happen if his partner is a liminal, what are the chances of that happening.
Danny really understimate his luck.
When Bruce born, Danny loves him at the first sight, but he knows that he can't keep him (Duties as the ghost king? Dead and live shouldn't be together?) And decide to let Bruce with the Waynes, descendants of Sam and good friends of him.
Bruce grow with a happy family, his parents, his godfather and Alfred.
Danny won't let his son alone, and began to spend more time in the manor, but not enough to create suspicion about his absence.
Around his eighteen, Bruce disappears and Danny was hysterical, he demanded clockwork to know where his son is, but clockwork, only said that he'll know in the correct time.
When Bruce comes back, Danny crashes him in a bear hug and ask about everything. And when Bruce told him about what he want to do, Danny couldn't help it to think that is genetic and sigh. He would be a hypocrite if he scolds Bruce.
Look like the family is back to the business.