11 Clash of Titans: Part 2

With a roar of determination, All Might gathered the remnants of his fading strength. The Nightmare, who had been nimbly darting in and out of the shadows, was momentarily caught off guard by the hero's sudden resolve.

In the confined space of the alleyway, All Might's towering figure seemed to swell with energy. He drew upon his nearly depleted reserves of One For All, his muscles bulging and his veins pulsing with power. It was time to bring an end to this extraordinary battle.

"Detoroit… SMASH!" All Might bellowed, his voice echoing through the narrow passageway.

His fist, fueled by the mightiest of all quirks, shot forth like a cannonball. The air crackled with unrestrained force as the overwhelming shockwave emanated from his clenched hand.

The Nightmare, despite her incredible powers, had little time to react. The explosive force of the Detroit Smash descended upon her, a tempest of unimaginable might.

The impact was cataclysmic. The alleyway shook to its very foundations as an explosion of energy erupted from the epicenter of the attack. A blinding light engulfed the vicinity, obscuring the figures within.

When the dust finally settled, the once-menacing Nightmare had been vanquished. She was very weakened by the sheer power of All Might's attack.

All Might stood panting, his chest heaving as he surveyed the aftermath of the battle. His normally indomitable form bore the scars of the clash, but his spirit remained unbroken.

"It is finished," he murmured to himself, his voice tinged with both exhaustion and relief. He had faced many adversaries in his time as a hero, but the Nightmare had proven to be one of the most formidable.

As the echoes of the battle gradually faded, the once chaotic alleyway regained a semblance of normalcy. All Might's presence loomed large, a testament to the indomitable will of a true symbol of justice.

Unknown to All Might, his relentless pursuit of the Nightmare would lead to unforeseen consequences. The battle had drawn to a close, but the ripples it sent through the world of heroes and villains were only beginning to emerge.