Eren threw the sponge at the wall, he was sick of cleaning, why did the Heichou have to be so anal about cleaning? Why was he being singled out, just because he could turn into a titan? Levi had excused everyone from the base, Mikasa had put up a bit of a fight, but in the end was forced to return to the city with the others, now it was just Eren and Levi. Eren tensed up when he heard foot steps stop behind him, he went to turn his head, but his face was met with a swift kick.
“Tch, what do you think you are doing brat.” Levi glared at the teen. “Look at all the water you have all over the floor, you aren't suppose to use a sopping wet sponge and leave water everywhere. Have you had so much free time that you forgot how to clean?” he put a hand to his face.
Eren stood, his cheek red from where he was kicked. “I don't see what cleaning has to do with training! We should be prepairing to fight the titans! Not just cleaning every spot in this place, we aren't even going to be here long, so what does it-” and a swift kick to Eren's right leg, causing the boy to fall to his knee in a kneeling position.
Levi walked up to him and grabbed him roughly by the hair. “A clean place is a happy place.” he said with a completely serious face. “You also have no right to talk to your superiors in such a manner!” he pulled Eren up by his hair, looking him dead in the eyes. “You will clean till this place is spotless or you will be punished.” releasing Eren, he exited the room.
Grumbling, Eren went back to cleaning, he couldn't fight with the Heichou, and for a little guy he was really strong. Levi had saved Eren's life and showed him a decent amount of respect, as long as Eren did as he was ordered and didn't question him, and Eren still felt really guilty about not being able to save Levi's squad members; especially Petra.
It took five hours, but Eren was finally done cleaning, wiping the sweat from his forehead, he went to report to Levi, and hope the Heichou wouldn't find a tiny little speck to complain about. Eren went to Levi's room and went to knock on the door, seeing it was open a crack,instead of knocking, curiosity got the better of him. Peaking into the room, wondering what the Heichou did in his alone time, Eren's face turned bright red.
Levi was laying in his bed, completely dressed, but his pants were undone, and he was moving his hand up and down his penis. His thumb pressing against the tip, his hips moving upward, and he let out very soft moans to not let Eren hear him. Eren bit his bottom lip, Levi definitely didn't have any short comings in that department, and he found his pants getting tighter with his growing erection. He watched as Levi's hand sped up, tightening around his cock, pulling upward, and the way his body moved.
Before he even knew what he was doing, Eren had slipped his hand into his own pants, and began to mimic Levi's hand motions, trying to stifle his moans; out of fear of Levi stopping what he was doing, getting up, and kicking his ass for being a peeping tom. Eren had never masturbated before, he knew about it, he'd seen Jean and some of the other guys do it, he just never had the urge to do it before. He gasped louder than he had intended, watching Levi cum into a handkerchief, while he came into his own hand.
The moment of “Oh god, that felt really good” was quickly replaced with “Oh fuck, I'm going to be murdered.” as Levi's head quickly turned to the door, the look on his face was enough to make Eren want to be killed by a titan right at that very moment, rather than have Levi torture him. Levi was to his feet in moments, tucking his cock back into his pants,stalking quickly to the door with wide eyes, and a dark expression.