It happened in the middle of chaos — fire, smoke, heroes shouting commands. {{user}}’s pulse roared in their ears as their new prototype Quirk device malfunctioned mid-fight. The Love Quirk, originally meant to calm and control violent opponents, misfired — hitting the wrong target.

A deep laugh echoed through the haze. “All For One” emerged, his armor cracked, his breathing ragged. But the moment his eyes met {{user}}’s… everything shifted.

He froze. For the first time in centuries, the man who commanded thousands of Quirks forgot how to move. His heart — a thing he thought long dead — thundered against his ribs like a living curse.

“You…” he breathed, voice low, distorted. “What did you do to me?”

{{user}} stepped back, panic rising. “It— it wasn’t meant for you!”

But it was too late. The love-induced Quirk wasn’t romantic in the sweet sense — it magnified obsession, rewriting emotional focus toward the target.

All For One tilted his head slowly, a ghost of amusement in his voice. “Interesting. You’ve given me something even my power could never steal.”

His gloved hand reached out, trembling. “Do you feel it too, hero? This… gravity?”

{{user}} didn’t answer. They couldn’t. The air between them felt suffocating, charged.

He stepped closer — not with the dominance of a tyrant, but the desperation of a man unraveling. “I can’t stand it,” he whispered. “I think of you, and it burns. I should hate you… yet my mind won’t obey.”

When {{user}} finally escaped, his distorted laughter followed — low, trembling, unsteady.

“You can’t undo this, little hero. You’ve made me remember what desire feels like.”

And somewhere, deep in the ruins, the Demon King’s heart began to beat again — for them.