The Zealot Marine (First Try) (Attack On Titan x Halo Isekai)

[DefenderGerson]

This is a short fanfic where I imagine Floch Forster reincarnating as a Halo character



The warehouse that once had the airship, where the Alliance used it.

The Rumbling had come at last. colossal footsteps that cracked the earth like thunder, walls of steam and shadow blotting out the sky. Floch Forster clung to his bloodied chest, blood slick on his lips; he was shot by ODM gear of Mikasa's own weapon. His dark combat uniform was torn, soaked crimson. Around him, only an empty warehouse where the Alliance take of their airship for the final fight with Eren.

He coughed, tasting iron. His chest burned with every breath. The world narrowed to the pounding of his heart and the distant roar of Eren's titans marching to erase the world beyond the island. And will crush him from the Eren Titan. There he lies on the stone floor as a fresh new corpse

This is it, he thought. No regrets. I fought for Eldia. For Eren. For a future where our people don't kneel anymore.


He took one last ragged breath, chest rising… then falling. The pain faded. His body lingered, limp, even as life slipped away like sand through fingers.

Silence.

His invincible soul lifted, untethered, drifting through warm, endless darkness. For the first time in years, there was peace. No screams, no gunfire, no betrayal. Just quiet.

Is this Heaven? Floch wondered dimly. If it exists… will they let someone like me in? A devil who chose the slaughter so others could live free?

Then—something pulled.

Not gentle. Insistent. A divine tug, like a hook in his soul. Golden light exploded through the void, blinding, searing. He tried to shield nonexistent eyes.

A being appeared—pure white, formless yet radiant, extending an arm that was more light than flesh. No words. No judgment. Only purpose.

The light shifted. Floch felt his soul split—duplicated, torn, flung outward like seeds on the wind. One fragment remained behind, perhaps dissolving into whatever afterlife awaited fanatics. The other hurtled through impossible distances, across gulfs of stars and time, toward something alien, cold, mechanical even.

He felt… small. Fragile. Young.

His eyes snapped open.

White. Too bright!?

Fluorescent lights hummed overhead, harsh and sterile. The air smelled of antiseptic and metal. Feel like a typical hospital in Paradis

His own body feel weak.

Tiny fists clenched in fury. He thrashed instinctively, lungs burning with first air. Panic surged—What is this?! Where—?!

Voices filtered through the haze.

"Ohhhh… welcome to this life, little one," a feminine voice cooed, warm and exhausted. Hands very gentle, impossibly large has cradled him. "Look at those eyes. Already so fierce."

A deeper voice answered, closer now, laced with tired joy. "He's got a good set of lungs on him. Strong grip, too."

"What should we name him?" the man asked.

The woman paused, stroking a tiny cheek with one finger. "Floch. Floch Forster."

A soft chuckle. "I love it, Lily. The Forster family just got a little merrier."

"As do I, Kenneth," she replied, voice thick with emotion. "Our little Floch."

The baby stared up at the blurry faces hovering above him. A woman with tired green eyes and sweat-damp hair. A man with callused hands and a miner's build, wearing a faded jumpsuit patched at the elbows. Beyond them, however, a hospital room of pale blue walls, monitors beeping softly, a window showing a violet-tinged sky and distant prefab domes under twin moons.

Outer Colony. The words drifted unbidden into his reforming mind, fragments from… somewhere. A frontier world called New Corinth, in a quiet system far from the glittering Inner Colonies. Mining rigs. Agri-domes. Families are scraping by on UEG subsidies and hard work. No walls. No titans. Just endless sky and the promise of more stars.

But the name 'Floch Forster' rang like a bell in his skull.

Memories flickered: a suicidal charge under Erwin's wings. A speech on a rooftop. Eren's cold eyes. The Yeagerists' salute. Blood on snow. The Rumbling's thunder.

And now… this.

He stopped crying. The newborn body trembled, not from cold or hunger, but from the collision of two lives.

Reborn, he realized. With everything intact.

The parents laughed softly at his sudden stillness, mistaking it for contentment.

Kenneth Forster leaned down, pressing a kiss to the tiny forehead. "Welcome home, son. You're gonna see things we never did. The stars are waiting."

Lily cradled him closer. "Sleep now, Floch. You deserve to have happiness, my son."

But inside that fragile shell, the soul of a man who had once screamed for extinction stared out at the alien sky.

This universe doesn't know what's coming, he thought, even as infant exhaustion pulled him under. But I do.

And when the time comes… I'll be ready.

The lights dimmed. The monitors beeped on.

A new life began quietly, ordinary, on the edge of a vast and unsuspecting galaxy.

For now.