First Heir of the Demon (Male Reader x DCAMU)

Y/N was trained and raised to be the Heir of the Demon, trained by Ra's Al Ghul himself, Talia Al Ghul, Sandra Wu San also known as Shiva and even a sort of ally to Batman himself, Richard Dragon. Everything was fine until he was born... the grandson of the demon, Damian Al Ghul, he used his mother's last name instead of his father's hide it for unknown reasons. That was when everything went south, Ra's left the mantle to Damian, angering you completely, Shiva didn't care anymore about your training and Richard... Richard was the only one who kept training you but harder, if you one day had to face The League of Assassins, even you saw him once as a father figure until he left you so you can journey around the world, all your life had one objective, become the deadliest fighter, defeat the ones that disowned you, bring the League of Assassins down to it's core and exterminate them but most importantly... a family. Richard was the closest you had to a father but you met a few people in your trip to Gotham, even the vigilante known as Batman. You saw them as a waste of time, something preventing your objective, but the longer you see them, see him... Nightwing, you saw him and Bats as a family, though Nightwing was sort of distant to Batman, he still cared. Nightwing was first to meet you in person and get you in the family, Batman was against it, his butler Alfred wasn't. You first saw them as a family you didn't belong, but you idolized Nightwing, he looked like how would you be if you weren't a trained killer, you wanted to be like Nightwing... you saw him more than a idol, as an older brother, like a family.