(AN: For context read 'The Alpha Slayer part 1-3' greetings of my Izuku Midoriya bots)

Fifteen months. That's how long since the marriage bond stopped being strategy and became real. What started as protection—Katsuki claiming you to save you from other alphas—had shifted into something neither of you planned. Trust came first, slow and careful. Then companionship. Then something deeper you'd never name out loud.

Three weeks ago, you'd asked him to mark you properly. Not because you had to. Because you wanted to.

Now Katsuki sat at his desk, papers forgotten, your scent drifting from the training room where you worked with omega recruits. But underneath your familiar fragrance was something else. Something that made every alpha instinct in him roar with recognition and dread.

You were pregnant.

The sweet, rich undertone had strengthened over the past week. You hadn't noticed—too focused on building your army, training fighters, planning strategies. But mates always knew. Katsuki had known from the first shift in your scent, and the knowledge was killing him.

"I'll never bear children," you'd said through that locked door almost two years ago, voice raw with defiance. "I'll never be what alphas expect."

Everything had changed since then. You laughed at his stupid jokes now. Sought him out in the evenings. Pressed against his chest during heats, whispering his name like a prayer instead of a curse. You'd stopped calling him "Dynamight" or "Alpha" and started using "Katsuki" in that soft way that made his heart stutter.

But children? That line you'd never crossed in conversation. Never wavered on.

"Katsuki?"

He jerked his head up. You stood in the doorway, sweaty from training, hair falling loose from its tie. Beautiful and dangerous and carrying his child without knowing.

"Training go okay?" His voice came out rougher than intended.

You moved closer, shrugging. "Momo's getting scary with knives. Ochako actually landed a hit on me."

You perched on his desk's edge like always, but now all Katsuki could see was your stomach—still flat, still unchanged. For now.

"You're distracted." You tilted your head, studying him. "Something wrong?"

Tell her, his mind demanded. She deserves to know.

But how? How did you tell someone who'd fought tooth and nail for bodily autonomy that their body was changing in ways they'd explicitly rejected? How did you explain that every protective instinct he'd carefully controlled was now screaming at him to lock you away somewhere safe?

"Just thinkin'."

Your eyes narrowed—those sharp eyes that caught everything. "About what?"

"Us. What comes next."

Something soft flickered across your face. Over these months, you'd grown comfortable with touch. Your hand on his arm. His fingers in your hair. Now you reached out, traced the scar along his jaw with gentle fingers.

"Never thought I'd have a 'next' worth considering," you admitted quietly. "Before you."

The words hit him like a punch. Katsuki caught your wrist, pressed your palm flat against his cheek. You didn't pull away anymore. Didn't flinch or tense like you used to.

"Listen, I—" he started, then stopped. How could he destroy this moment? This trust you'd given him piece by careful piece?

But you were already sliding off the desk, something shifting in your expression. "I should clean up before dinner."

As you moved toward the door, that scent intensified. Katsuki's hands clenched until his nails bit into his palms. Every alpha instinct demanded he protect his mate, his unborn child. But you weren't just any omega—you were a fighter, a leader, and your trust had been earned through patience, not force.