OMG I never posted Part 2

Here you go
Thank You, Heichou - Part Two
Eren turned fast, going to run as fast as he could to get away from Levi, the older man was definitely going to slaughter him. A hand reached out quickly grabbing the back of Eren's head hard, keeping him where he was. “So, not only do you lack the ability to clean correctly in a timely manner, you also do not understand the concept of knocking, and privacy. You piece of garbage....look at the mess you made on the door you little perverted shit.”
Glancing at the door, when his head was forcibly turned to it, Eren saw that he'd cum on it. “Heichou...I...”
“You didn't even have the decency to put your dick away when you were caught.” Levi released his head, grabbing his arm. “It seems you need to be taught proper discipline.” he pulled Eren into the room and pushed him into his bed. “Stay there, I will clean your mess up this time, but do it again, and I will kill you.” his tone sent a shiver of fear down Eren's back and he watched the man grab some tissues. Eren squirmed on the bed, wondering what Levi was going to do to discipline him, he guessed it was going to be painful.
Eren could hear Levi muttering something, but he couldn't make it out, the man was busy cleaning his cum off the floor and the door. In the back of his head, he was thinking about escaping out the window, but thought against it, as leaving would only make Levi more pissed and violent. So, Eren sat on the bed silently, and blinked when Levi was no longer at the door; he must have gone to dispose of the tissues.
Right when Eren was going to take his chances and escape out the window, Levi appeared in the door, holding arm restraints, and metal bar gag. “H-Heichou, I am really sorry, you don't have to lock me up. I'm not going to transform or anything, I-” he was cut off as Levi sat beside him.
“You are going to be disciplined, not thrown in jail again.” Levi strapped the leather arm restraints tightly onto Eren, before placing the gag into his mouth. He could see the uneasiness in Eren's eyes, standing he pulled Eren up, to make Eren's confusion even worse, turned him so he was facing the bed, and pushed him forward; bending over the bed, his knees on the floor. “You need to be taught that every action has a consequence.” Eren's eyes widened as much as they could, his pants were pulled all the way off, was Levi going to spank him like a little kid for being bad? Why did the thought suddenly make him hard. “Tch...Disgusting, you have become hard just from your imagination.”
Eren tried to apologize, but the gag got in the way, his cheeks red. His body jerking in shock as Levi actually did just spank him, but not with his hand, if Eren had to guess, it was a riding crop. Pushing his knees together, Eren pushed himself more onto the bed, and received another hard lashing across both his ass cheeks with the riding crop. Levi put on a pair of gloves, moving his fingers over the red lines on Eren's ass, and then pushed one of his fingers deep inside the teen; Eren jerked his hips hard into the bed from the feeling.
“If you dare turn into a titan during your punishment, I will kill you, do you got that?” Levi watched Eren nod his head. “Good...” he moved the finger in and out of Eren, the boy raising his hips to meet his hand, obviously enjoying his “punishment”. Pushing another glove covered finger into Eren's ass, Levi found himself hard again, and he hooked his fingers inside him, spreading them, and pushing them as deep as he could. Eren let out gasps and moans into the gag, his legs spreading and hips bucking backward into Levi's hand.
Levi could only keep his own self control in check for so long, he removed his cock from his pants with his free hand, and continued to stretch Eren. He removed his fingers, hitting Eren a couple more times across the ass and back with the riding crop, before placing it aside, and grabbing Eren's hips. Eren cried out, feeling the Heichou thrust his cock into him as far as he could, and Levi moaned at the warm feeling of Eren around him. Levi wasn't very gentle, he pushed Eren roughly into the bed, his right hand grabbing Eren's hair and shoving his face into the bed, and he'd pull out all the way, before thrusting back in as deep as he could.
The older man breathed heavily, his eyes closing, and his hips slamming into Eren's ass. He removed his gloves, pulling Eren's hair hard, and lifting his face from the bed. Eren's cock twitched, precum dripping out from the tip, drool coming from his mouth because of the gag, and he rocked his hips quickly with each of Levi's thrust. Levi pulled out of Eren, right when both of them had been so close to cumming, and pulled the boy away from the bed.
Forcing Eren to the floor, on his knees, ass up, Levi thrust back in. “I am not going to have to change my sheets because you came on them.” both let out long moans, Levi cumming inside Eren, and Eren onto the floor. “You will be cleaning that up.” Levi pulled out of him, removing the gag and placing a handkerchief into Eren's mouth. “You have to still be punished, clean the mess you made with that cloth in your mouth.”
Eren's heart was pounding in his chest, he didn't even think twice, he moved on his knees to the cum on the floor, and started to wipe it up with his face and the cloth. Levi fixed his pants, sitting on his bed cross legged, watching Eren, and thinking of other things he could do with the boy now that he knew what a little pervert he was. He could see the blush in Eren's cheeks, the haze in his eyes, and the way he was now acting like a little pet; had he known it was so easy to break the boy, he would have done it weeks ago.
“Come here.” Levi commanded, Eren couldn't stand correctly with his arms bound, so he crawled on his knees to the Heichou. Levi grabbed Eren's chin, smirking slightly. “You took your punishment rather well, this is only the beginning. It would have been bad if you turned into a titan in the middle of your punishment, so I needed to test you.” he leaned down and said into Eren's ear. “Next time we'll try something outside, that way if you do turn, you won't destroy the building, and hopefully you won't be fool enough to harm me.”
Eren shivered, nodding, he felt so strange, and it wasn't like he didn't like it; he did know that Mikasa could never know what the Heichou did to him, well anyone for that matter. He took in a deep breath when the gag was removed, looking at Levi. “Heichou?”
“From now on, you must take care of yourself, bathe regularly and practice dental cleanliness. If I see anything on your teeth or notice your hair is greasy, you will be severely punished...and not in the way you just were.” Levi ran a hand into Eren's hair. “I'm going to remove your restraints, your hygiene checks start now. Go and clean yourself up and go to bed, we have a long day of training tomorrow.” Eren nodded, the restraints coming off, and he left the room with his clothing. Levi laid back on his bed, running a hand through his own hair and then heavily sighs to himself as he watches Eren leave.