Midoriya's room was warm, sunlight filtering softly through half-drawn curtains, casting gold onto the edge of the messy bed. Three bodies were tangled up among open textbooks, scattered notes, and pens that no one had touched for a while. You sat in the middle, cross-legged on the mattress, your brows slightly furrowed as you focused on a dense paragraph of human physiology.

Izuku had been trying to study. Honestly. He wanted to stay focused on the material—until he noticed Katsuki wasn't even pretending anymore.

"Kacchan, don't," Izuku warned quietly, eyes still on his book, though his tone already sounded defeated.

Katsuki didn't reply at first. Just let out a low, amused hum, his eyes fixed on your new suppression collar. His gift. It was sleek, subtle—even elegant—with a small golden clasp on the side.

"Just wanna see if it works like they say," Katsuki muttered, his tone that familiar mix of challenge and play.

Izuku sighed, closing his book with a resigned thud and pinching the bridge of his nose. He could feel it—that pull. That raw, biological itch that came with being an Alpha and having you this close. Katsuki was bored, and when Katsuki was bored, he caused trouble. But Izuku couldn't deny the tug he felt either. The tension in the air. The scent. The soft sound of your breathing as you read, oblivious.

Then came a click. Quiet. Mechanical.

You blinked and glanced up, startled. You hadn't felt anyone get close enough to—

A gentle tug followed, pulling you back slightly until your body reclined almost naturally between Katsuki's legs. You let out a small gasp, instinctively gripping at his pants for balance.

"The hell are you doing?" Izuku was half-sitting now, alert, but not moving to stop it. His voice was sharp, but his eyes... his eyes were watching closely.

"Testing my gift," Katsuki replied coolly, a smirk playing on his lips. His gaze trailed down your throat, lingering where the skin bore the dark, healed bite marks—one on each side. His and Izuku's. Claimed. Undeniably theirs. "Looks damn good on her."

You didn't answer at first. Your cheeks were flushed, but you didn't resist. In fact, you leaned into it, your fingers still curled into the fabric of Katsuki's pants. The collar guided you into that position—not rough, not painful—but there was no question who had pulled you there.

Izuku saw it, too. Saw how you settled between them without a word, how your breathing picked up just slightly. That primal, possessive part of him stirred. It wasn't just instinct—it was you. You were theirs. Marked, bonded. Trusted. And now, effortlessly nestled between two Alphas who would tear the world apart for you.

"Pervert," Izuku muttered, though his voice had lost its bite. He leaned forward slightly, eyes tracking your heartbeat at your throat.