A / N: Hey, this is my first Fanfiction, so feel free to give me constructive criticism!

Age of the Batfamily:

Bruce Wayne/Batman: 34

Dick Grayson/Nightwing: 19

Jason Todd/ Red Hood: 16

Timothy Drake/Red Robin: 14

Damian Wayne/Robin: 10

Selina Kyle/Catwoman: 21

Cassandra Cain/ Black Bat: 16

Stephanie Brown/Spoiler: 14

Barbara Gordon/Oracle: 20

Katherine Kane/Batwoman: 29

Before starting I give you the background information of this AU:

-The Teen Titans (Dick / Robin, Cyborg, Raven, Beast Boy and Starfire) were never founded;

-When he was still Robin, Dick was a member of Young Justice as a co-leader and later became a leader before leaving the team and joining the Justice League at eighteen;

-Damian arrived relatively recently, it was Dick who made him Robin and was his mentor for about five months as Batman since Bruce was on a mission with the JLA;

- So for this reason Damian related a lot with his older brother;

-Bruce still does not trust Damian very much since he has had little time to know him and distrusts him;

-The past of the various characters is the same.

It was a dark night. The street lamps of the infamous city emitted a faint intermittent light. The buildings resembled each other. In and of itself the city was full of criminals of various kinds: thieves, murderers, rapists, drug dealers and so on. We are talking about Bludhaven, Gotham City's sister city, which is also a dangerous city.

Over the past two years, the crime rate in Bludhaven has been steadily dropping thanks to the efforts of a hero who has become a vigilant of the city. The aforementioned hero is the famous Nightwing who has been fighting crime since he was eight and has saved many lives over time. He is cleaning up his city as he goes, just like his mentor Batman did and will continue to do with Gotham.

But the vigilant doesn't just clean up the city at night; in fact, the boy (or rather the man?) behind the mask, Richard John Grayson-Wayne, adopted son of billionaire playboy Bruce Wayne, works as a policeman at the city's GCPD.

Anyway, it was one in the morning. A dark figure was prowling on the roofs of houses, looking for criminal activity. It was none other than Nightwing swinging from roof to roof. Until then he had only encountered a small group of drug dealers who were easily shot down and arrested. Nighwing stopped above a building high enough to observe his city and to give vent to his thoughts.

It's a quiet night, too quiet. I am getting bored. So far, I've only met those three low-level criminals. I wish something interesting would happen.

He sighed and, just before turning around and going elsewhere, he caught a glimpse of something out of the corner of his eye but it was too far away: so he took out a pair of binoculars to see what is happening. He saw six men who surrounded a poor old man in a dark alley. The men ranged from twenty-five to forty years old. A man, probably the leader of that group, advanced towards the elderly man who was now cornered. His eyes wandered to every person, and even from this distance, Nightwing could see the raw fear he felt.

The vigilant replaced the binoculars and clenched his fists. Those cowards were taking it out on a defenseless poor man. But now they would have paid dearly for it. He smiled slightly and threw himself downstairs.

He could feel the adrenaline rising more and more in his body every second he fell lower and lower. As he fell at an impressive speed, he pulled out his grappling hook, aimed at the roof of another house and fired. As soon as he felt that the rope had clung, he swung towards the building and landed skillfully on the roof. He loved doing this action. He felt free, he felt like he could fly, just like his mother always said. For this reason she often called him my little Robin.

He repeated this action a couple of times until he got to the building closest to what was happening. He crouched on the edge and waited for the right moment to intervene. As soon as the alleged leader pulled out a knife, the vigilante took a wing-ding (the Nightwing version of his mentor's Batarangs) from his black utility belt and threw it. He then swooped down towards one of the men.

The leader screamed in pain as the wing-ding made contact with his hand and the knife went far away. Not a second passed when Nightwing kicked the head of one of the men who fell heavily and gave himself the momentum to hit another criminal's chest followed by a straight punch in the face while still halfway through air and landed perfectly on his feet. There was a nauseating snap of the opponent's nose.

"You were bad for not inviting me to the party!" Nightwing joked.

Meanwhile, the hero analyzed the situation analytically: two criminals were on the ground, the leader was holding his broken hand with the other and three other enemies remained, two in front and the last one behind him. He heard noises coming from behind him and ducked down in time to avoid a punch, turned to give him a strong punch in the stomach and immediately afterwards a spinning kick to the head, making him wobbly on his own feet. Since he wouldn't be much of a threat even if he managed to stand up, Nightwing turned and ran towards the two Delinquents.

The one on the right tried with a punch that was easily dodged and in return received a right hook that sent him crashing violently into the alley wall causing him to go unconscious. Nightwing turned his gaze to meet that of the other criminal who kicked him directly in the chest, but the vigilante blocked him and threw him across the alley. To prevent the leader from harming the elder or attempting to escape, Batman's former protege threw another wing-ding at him, this time thrusting into his right shoulder making him scream again.

He heard shaky footsteps from behind him but ignored them and ran to the thug who had just got up from where he had landed a few seconds earlier, jumped in the air and threw a violent kick on the side of his head and used this as a springboard to perform a triple somersault backwards and landed skillfully on his feet, just behind the criminal who was struggling to stay upright and was now gazing confusedly ahead of him. Nightwing threw a straight punch to the side of his head rendering him unconscious.

Subsequently, he turned back and walked slowly towards the last remaining offender, as well as the leader of the group who was holding his bleeding right shoulder (where the wing-ding was still stuck) with his left hand. The hero pulled out the escrima sticks and stared at him coldly from behind the mask and noted with satisfaction that the opponent was trembling with fear. He stopped a few inches from him and after a few seconds of silence he pulled off the wing-ding and the stick made contact against the criminal's skull, causing him to pass out. All of this happened so quickly that it would have made Flash proud.

Then he cautiously approached the elderly man who was still slightly trembling with fear and softened his gaze.

"Are you okay, sir?"

"Y-yes, t-thank you for saving me, M-Mr. Nightwing." the gentleman thanked him warmly.

"Nothing, now go home and pay attention, please." the old man nodded, thanked him again and began to leave. The vigilante turned to the six unconscious figures and sighed.

"At least something interesting happened." he grumbled, and in a minute or two he had tied the six criminals to a post, waiting for the police to arrive and take them to jail. Nightwing grabbed the grappling hook, fired at any building and continued the patrol.

Meanwhile, a slender and agile figure wandered on the roofs of the buildings, observing the protector of the city, keeping a good distance from him but being able to observe him with alert green eyes that lit up every time it had the opportunity to see him clearly.

"Meow ..." murmured the unknown figure and walked away to follow the vigilant.