It wasn't supposed to be like this.

Levi regarded the quivering boy with faint interest. As much as he tried to keep his distance, he couldn't. The boy - he had to refer to Eren that way, least he forget that Eren was nothing more than a child - stared up at him, his eyes wide and his cheeks flushed. "C-Corporal -"

"Quiet," Levi ordered, silencing Eren with a hasty kiss. The boy responded eagerly, despite the muffled noise of confusion escaping him only moments before. As their tongues met, Levi let his body press against Eren's.

The boy's, he silently corrected himself. Not only was Eren still a child at only the age of fifteen, he was a subordinate. One of Levi's men. Those facts didn't stop Levi from taking what he wanted. If anything, it made removing Eren's clothes easier, made kissing him easier, made letting his calloused fingers ghost over Eren's - the boy's - skin easier.

Eren seemed to understand that he needed to hold back his moans as Levi's mouth dipped over the head of his cock. Levi teased the boy as much as he could, relishing in the little gasps that managed to escape Eren from time to time. The boy's thighs tensed under Levi's hands. He'd need to stop, soon. Give Eren a moment to recover before he took the boy entirely.

He had lubricating oil ready, fingers plunging deep inside the boy without any warning - it wasn't like Eren wouldn't just heal anyway, should Levi get a little too rough. Levi wanted to ask if this was Eren's first time - with another man or otherwise, but he held back when he saw the look of apprehension on the boy's face.

Just a child, he reminded himself. A subordinate, one half his age. A soldier, just like Levi. A soldier who's watched his companions die at the hand of the enemy, the Titans, just as Levi had countless times during his career as a Scout.

The first thrust could almost be called tender, Eren's nails digging into Levi's arms as he braced himself for further pain. Levi bent forward, kissing where he could reach in an effort to get Eren to relax. After a few rolls of his hips, Levi could see the way Eren bit his lip, just to keep quiet. Could hear Eren's whimpers over the sound of flesh slapping against flesh.

Levi knew that tomorrow - tomorrow, either one of them might not come back from their excursion outside the Wall. And that - that was reason enough to have Eren in this way. That was reason enough to forget, for just one night, that Eren was nothing but a child; a soldier still wet behind the ears; a soldier that was under his command.

But would he remember those things tomorrow, when those things would matter once again?

He sincerely hoped he would.