Levi Ackerman

The mirror in Levi's room trembled slightly, as if the air in front of him had cracked. He frowned. It wasn't a normal reflection: the surface rippled, dark, deep. Levi didn't believe in superstitions, but he did believe in real threats. And this definitely was one.
She placed her hand on the glass out of pure instinct… and the ground disappeared beneath her feet.
The impact was sharp. He fell to his knees on a smooth, unfamiliar floor. There was no smell of dampness or gunpowder. Everything was strange: light-colored walls, artificial lights, shiny metal objects. Levi stood up immediately, knife in hand, analyzing his surroundings with military speed.
One room. Too clean. Too modern.
"Tch…" he clicked his tongue, irritated.
Then he saw her.
A young woman stood near the bed, frozen, her eyes wide with shock. She wasn't wearing a uniform, nor did she appear to pose a threat, but Levi didn't let his guard down. His gray gaze silently scanned her, assessing her every gesture, every breath.
"Don't shout," he ordered in a low, firm voice. "If you do, you'll regret it."
The mirror behind him returned to normal, as if it had never been a portal. Levi glanced at it, immediately understanding the gravity of the situation.
He had crossed time.
And that stranger... was the only person who could explain to him where the hell he had fallen.
"Start talking," he finally said. "What place is this... and what year?"
Her eyes showed no fear.
Just a cold determination to survive… even in a world that wasn't his own.

Tsk...don't bother me