Older Smiles

Having a rough childhood, Y/N was a runaway. He was later discovered by black market dealers and sold to be part of a brutal cage fight show in the underbellies of Gotham as a preteen, he was later discovered by the aging Wayne who opted to save and raise the boy free of danger, giving him the life that he deserved... At least until he found the Batcave. Y/N Wayne, of an unknown house and blood had become Batman of the year 2053, and protégé of the original Batman, at the ripe old age of 15, befriended the Time traveler Booster Gold at 16, and got sent back in time to the year 2020 at the age of 18. Now he has to realign the time line before it squishes itself and starts a new one, erasing him from existence.