CHAPTER 3

Eren panicked, pulling the rough woolen sheets over his exposed body. His face turned beet red as he turned away from the intruder. The soft click of boots approaching the cell made him grow increasingly uncomfortable. When it was quiet, he slowly turned his head in anticipation of some kind of verbal punishment.

He met eyes with Corporal Rivaille, who was now leaning on the iron bars of the cell, peering in with the same look of disdain. Eren noted how short and slim the Corporal was. Something about that, coupled with his intense demeanor, made him that much more exciting. "You should be asleep, Yeager."

"Y-Yes sir."

Rivaille pushed himself off the bars, causing them to ring for a moment, and slowly strode back down the hall towards the stairs.

After waiting until he heard no more footsteps, Eren snuck to the bars of the cell to assure Rivaille wasn't hanging around again. He fell back into bed, covering his face with the palms of his hands, and sighed deeply. He was filled with relief that the Corporal didn't punish him, but he was also confused. Why did he let me off so easily?

He slid to the edge of the cot and pulled the linen pants back up his legs. He was already hard again, the head of his member throbbing for more attention. Deciding it wasn't the best idea to attract Rivaille's attention again, he pulled the pants over himself and rolled on his side to sleep.

A wet towel landed on Eren's face, waking him with a startled yelp. He tossed it aside and struggled to sit upright quickly.

"Good morning Eren! How are you feeling today, hm?"

Hanji smiled widely, waiting patiently aside as Rivaille reached for the iron keyring on the wall.

"Ah.. A little sore from yesterday, thank you."

Rivaille smirked as he forced the lock of the cell door open. The hinges shrieked as the door swung back, and Rivaille entered the cell with a plate of bread and meats. He placed it on the small wooden table, and sat in the chair, crossing his legs.

"You'll be helping Hanji with those experiments today. Get dressed."

Eren frowned a bit and replied, "You won't be joining us, sir?"

"Of course. I'll be watching in case you misstep."

Eren eyed the food on the table, and looked at Rivaille as if asking permission. Sensing his discomfort, Rivaille sighed and stood up, walking back to the hallway. "Be dressed and ready in 10 minutes."

Eren hopped off the cot and into the abandoned chair, shoveling the bread and meat into his mouth as quickly as possible, nearly choking. He paused for a moment, and looked over at Hanji, who was waiting patiently in the hall, observing him like an animal at the zoo.

"OH! Uh, sorry! I'll be waiting with the Corporal."

She scurried up the stairs, and Eren finished his meal. He stripped off the linen pajamas, leaving them in a shameful pile next to the cot, and began putting on his uniform. He took a mental note to remember to have it washed soon. He strapped on his manuever harnesses and jacket, and tossed the short green cape over his shoulders.

Rivaille was waiting out in front of the castle when Eren burst out the doors. He tapped his foot impatiently, and checked his pocket watch. Stowing it in the front pocket of his jacket, he stared Eren down.

"You're 5 minutes late."

"My leather straps were tangled, I..."

Rivaille turned away before he could finish explaining, and nodded to Hanji. They made their way to the stables, and each mounted a horse. Eren was given a particularly unfriendly horse, whereas Rivaille's horse was affectionate and well trained. Hanji apologized to Eren as she tied his reigns to the saddle of her own horse. "He's still being trained, so as you can imagine, he's quite... Lively. Yes, lively!"

After some time travelling through the thick forest, they settled down to begin some mental training. Eren would transform, and Hanji would dodge his attacks gracefully until he managed to awaken inside of the massive body. He would release himself, and take a break before repeating the process.

Rivaille sat in a nearby tree the whole day, watching in silent anticipation.

I don't want to hurt him. If I had to, I'm unsure that I could. I can only hope he retains control.

As the sun dipped below the vibrant green canopy, they packed up to ride home. Exhausted, Eren could hardly sit upright in his saddle. He fell asleep multiple times on the path, and even fell from his horse at one point. Rivaille watched the boy, slumped over, eyes nearly shut, and he felt a wave of warmth pass over him that he didn't recognize.

Rivaille looped the heavy metal lock through the cell door and pushed it together, turning and drawing the key out. He hung the keyring on it's designated hook, and left Eren alone in the basement.

Eren lazily slipped his clothing off, leaving it in a sad puddle reminiscent of his pajamas that morning. He looked at the linen pajamas briefly, and decided he couldn't be bothered. He slumped backwards towards his cot, and fell with a hard thump, as his head hit the wooden frame on the other side. He hissed in pain, and rubbed his head.

He slid into a more comfortable position, and closed his eyes to fall asleep.

Fuck. I can't sleep with a hardon.

Eyes still closed, he snaked a hand down his stomach, and rubbed against the bristly hairs leading downward from his navel. It tickled, in a nice kind of way. His fingers traveled down further still, splitting down the middle at the base of his erection. He smiled, remembering how nice it was to have time for himself again. 'Was this going to be a regular occurrence?' he thought.

His fingers moved around the lower shaft, and he gave himself a slight squeeze. He moaned softly, and bit his lip as he loosened the grip and moved his hand up along the length. He brought his fingers in an arch over the head, and down to the underside, running a fingertip down.

"Again?"

He was startled by the dry voice, but too tired to cover himself with the same speed as the night prior. "Sir, I'm sorr-" "Don't be." Rivaille cut him off. Eren was caught off guard by this, and he sat up to look at the Corporal. He was leaning against the iron bars again, with the keyring hanging from his finger.

"Yeager. You have needs. This much is obvious." He nodded at the boy's blatantly exposed cock.

"However, so do I."

END OF CHAPTER 3

AN: Thank you to all who favourited/followed this story already, and thank you to anyone who simply read! It's so exciting to see it get views.
It's been so fun writing this, and the next chapter is going to be even better because (spoiler alert) SMUT!