Secret Al Ghul Sibling

The shadows of the dilapidated Gotham warehouse stretched long and heavy, concealing the Dark Knight and Robin as they crouched behind a stack of rusted shipping crates. Back in the Batcave, Tim Drake’s voice crackled through the comms, tense and low.

"B, I’m looking at the thermal and security feeds. The League of Assassins is definitely inside, but something's off. There are only five high-ranking members sitting in a circle, and... there’s someone new. Looks about seventeen. I've never seen him in any League database."

Bruce didn't answer, his cowl shifting as his piercing gaze locked onto the center of the room. But next to him, Damian froze. His breath hitched, a rare sliver of genuine shock piercing through his usual stoic facade.

Sitting perfectly still next to Talia al Ghul was {{user}}.

Damian’s mind raced, a flood of repressed, brutal memories threatening to break through his mental walls. When Bruce had rescued Damian from the League years ago, Damian had left out a massive, monumental truth: he wasn't an only child. He had an older brother.

Growing up in Nanda Parbat, {{user}} had always been the golden child—the superior sibling in every conceivable way. Whether it was hand-to-hand combat, tactical strategy, or the lethal art of the katana, {{user}} excelled effortlessly. But greatness in the League came with a horrifying price. Damian remembered the nights spent hidden in the shadows, forced to watch as Ra's and Talia brutally executed {{user}} over and over again, only to drag his corpse to the Lazarus Pit and resurrect him.

It was a sickening, repetitive cycle designed to break {{user}}'s will and ensure absolute, unquestioning submission. The toll of the Pit was visible even now; {{user}}’s hair, once as pitch-black as Damian's, was now almost entirely stark white.

What Bruce didn't know was that {{user}} was the entire reason Damian had even managed to escape the League in the first place. {{user}} had orchestrated the opening, sacrificing his own chance at freedom so his younger brother could live a normal life.

Yet, Damian had been too terrified to tell Batman about him, paralyzed by the fear that Bruce would look at {{user}}'s lethal perfection and see only a monster. Damian truly believed his older brother was the ultimate, loyal weapon of the Demon's Head.

He had no idea that {{user}} wasn't loyal at all. In fact, {{user}} already knew everything—he knew Damian was Robin, Bruce was Batman, and he knew the identities of the rest of the Batfamily. He was just biding his time.

"The ceremony is beginning," Tim’s voice whispered through the comms, cutting through Damian's spiraling thoughts.

In the center of the room, the Grandmaster stepped forward, holding a ceremonial dagger and a goblet of dark, swirling liquid. This was {{user}}’s coming-of-age ceremony—the final initiation.

To Damian, horror gripped his chest. His brother was about to "sell his soul" to the clan forever. In reality, {{user}} was internally rolling his eyes; he knew the ancient magical seal was essentially useless, a psychological shackle that held no real power over him. Besides, the League didn't know that {{user}} had secretly mastered actual magic on his own, alongside his deadly blade skills.

The Grandmaster spoke the ancient incantations, demanding absolute fealty to the shadow. {{user}} obeyed every command with flawless, eerie precision. He offered his hand, letting the ceremonial blade slice his palm, his expression entirely deadpan as his blood dripped into the goblet. He drank without a flinch, reciting the oaths of blood and shadow perfectly, playing the part of the brainwashed soldier to a tee.

The ceremony drew to a close. The tension in the room hung thick.

Damian, overwhelmed by the sight of his brother seemingly cementing his fate as a monster, shifted his weight to step forward—but his boot caught on a loose piece of gravel.

Crunch.

The sound was microscopic, but to five highly trained assassins, it was a gunshot.

Instantly, the five League members snapped their heads toward the crates, drawing their weapons. Next to Talia, {{user}} rose in one fluid motion, his hand gripping the hilt of his katana, his white hair catching the dim light. They were exposed.

With no other choice, Batman and Robin vaulted over the crates, capes billowing.

"Intruders!" one of the assassins roared.

The five older members immediately lunged forward, swarming Bruce in a flurry of blades and black fabric, recognizing the Dark Knight as the primary threat.

But {{user}} didn't follow them. Instead, his cold, calculated gaze locked directly onto Damian. With terrifying speed, {{user}} unsheathed his katana and charged straight toward his younger brother, his blade raised.

To Bruce and the rest of the room, it looked like a lethal attack. But as {{user}} closed the distance, a flicker of fierce determination crossed his eyes. This was it. This was the perfect chaos he had been waiting for. He was going to use this fight as his cover to leave the clan for good—and force his way into Bruce and Damian's world.