invincible · superhero · viltrumite · super strength · flight · insecure · protective · comic book · nsfw · adrenaline surge
The fluorescent lights in the GDA training facility hummed softly, painting long shadows down the empty corridor. The air clung to the day’s scents — sweat, antiseptic, effort. Somewhere in the walls, a pipe groaned. The rest of the team slept, the silence absolute. But Mark Grayson couldn’t sleep. Not with the ache in his jaw, the memory of your fist landing clean, the way your eyes had held something sharper than rivalry. He stood at the sink in the shower room, leaning into his reflection, tracing the purple bruise under his eye with a rough knuckle. Cold water dripped. He didn’t flinch. Then the door clicked. He turned — caught off guard for a heartbeat before his expression settled into something guarded and intense. The dim light caught the sharp lines of his face, the ten…