Hange turns Eren into a toddler during one of her experiments and Eren only wants Levi to take care of him

Levi was sat at his desk when he heard very rapid yet soft knocks on his door, "come in," he said, annoyed but still didn't look up from the papers over him. He was trying to figure out the formation for a new strategy he working on.

There was more knocking, "I said come in!" he called, "what are you deaf?!" he stood up to open the door and was surprised to not see anyone immediately in front of him. Until he heard a grunt and looked down to see a toddler, "what the fuck?! Why is there a child here?!" he yelled into the hallway.

He looked down at the child who had tears around his eyes and had his hands up to Levi, demanding to be picked up and pouting when he wasn't. Levi couldn't help but think he looked vaguely familiar.

The realization of who it was struck him at the same time he heard Hange's voice and several pairs of feet running towards them.

"Eren!" she called.

At the sound of Hange's voice, Eren ran past Levi into the room and hugged the back of his legs, already starting to sniffle.

"Oh there you are Eren, come in," Hange was now standing in front of Levi, who had his arms crossed, "I'll figure out how to reverse this," Eren started crying loudly, he obviously didn't want to go with Hange.

"Come on Eren," Armin said from behind Hange, "don't be a baby,"

Eren stopped crying but only to stick his tongue out at Armin.

"How do you fuck up this badly?" Levi finally asked Hange.

"To be honest, I don't know, I was trying to see if we could manipulate his Titan size, guess he manipulated his size and age," she laughed but Levi didn't find it funny.

He sighed and took a step to the side, "go on, Eren," but instead of going with them, Eren stared wailing and ran farther into the room, and crawling underneath Levi's bed.

"No!" he cried out.

"Can you just watch him for a bit while I go back to my lab and figure this out?" Hange asked him.

"Why the fuck do I have to do it?"

"He'll be too distracting if he cries the entire time he's with me,"

"And he did run straight to you," Armin added.

Levi glared at them but grabbed a hold of the door and threw it shut, "fine! Have Petra bring up some fruit or something," he walked over the bed and stood in front of it, he heard Eren shuffle and then heard a thump on the wall. He crossed his arms and started tapping his foot, "Eren," he said sternly, "get out of there, now,"

It took a minute, but Eren slowly crawled out and stood in front of Levi, sucking his thumb.

"Don't suck your thumb, Jaegar," he ordered. Eren immediately took his thumb out and his hand fell to his side. Levi raised an eyebrow, seemed Eren still knew how to take orders, he just looked and acted like a child. He picked up Eren but only to sit him down on the bed.

"Don't cause any trouble, ok? I have work to finish," he almost laughed at the determined face Eren plastered onto his face as he nodded. But instead he sighed and walked over to his desk. It wasn't long for Eren to start to fidget and roll around the bed, he pulled the sheets off and wrapped himself in them, jumping up and down the bed and yelling "boo" in Levi's general direction.

Levi ignored him but that only made Eren more persistent for attention, he held on tight to the sheets and started running around the room making any noises he could.

There was a knock at the door, "yes?" Levi called.

"It's Petra. I brought food for Eren,"

Levi stood up and walked around Eren who was now laying on the floor and opened the door for Petra, she walked in holding a tray with various things. She set the tray down on Levi's desk as he sat down and placed a tea cup in front of him, "calming tea, I figured you would need it,"

"Thank you, Petra," he raised the cup to his lips and sighed contently at the warmth of it.

Petra picked up a small plate where she had cut a banana into small piece and held it out to Eren, "here you go," she smiled warmly at him and Eren jumped off the floor and took the plate, then sat back down on the floor to eat.

"He's adorable!" Petra exclaimed.

"He's annoying as shit,"

"Watch your language around him, Levi. He's a child,"

"No, he's a soldier who Hange turned into a child, he seems to know everything he would normally know, just acting childish. I can fucking curse all I want," Petra frowned at him but excused herself.

"Wait," Levi called out to her, "can you watch him for a little bit, just until I'm done with this,"

"Sure," Petra smiled, as though she had been waiting for Levi to ask her. He thanked her as she picked up Eren and walked over to the bed so she could sit him on her lap.

Petra cooed and played with Eren until Oluo came to the door to tell her she was needed. Levi was almost done with the formation so he told her to go. As soon as Petra was gone, Eren began to whine and looked like he was going to cry again. And Levi did not want to listen to him cry.

"Come here, Eren," Eren didn't have to be told twice, he got to the edge of the bed and then turned on his stomach so he could hold onto the bed as he got off, then he waddled over to Levi.

Levi picked him up and set him down on his lap, he handed Eren a small cup of water from the tray, "don't spill it," Eren drank the entire thing and then placed the cup back on the table. He started to squirm around Levi's lap until he was on standing on Levi's lap and facing him. Levi was about to tell him to get off when Eren kissed his cheek and sat back down. Staying as still as he could manage while Levi worked.

Levi was surprised at how calm Eren was being, but once he finished, he realized it was because Eren had fallen asleep. He had ended up sitting sideways on Levi's lap, his cheek resting on Levi's chest and his back being supported by Levi's arm that he hadn't been moving. His breathing was calm and came in even breaths.

Levi piled up the papers with his free hand and then moved that hand underneath Eren's knees and picked him up as quietly and with as little movement as to not wake him up. When Levi began to walk towards the bed, Eren's eyebrows furrowed and he frowned, "shh, shhh," Levi swayed him a little until Eren's face relaxed again. He laid him down on the bed and then grabbed the sheet from where Eren had left it at the end of the bed and covered him in it, making sure to be gentle.

He looked at Eren sleeping and couldn't help a small smile. Eren was really cute as a kid, even if he was annoying. He could deal with taking care of him until Hange came up with a way to reverse him back. Eren was supposed yo be working with Hange all day today, so Levi wasn't going to get the chance to see him anyway. This was better than nothing, he quickly concluded.

Levi thought about what to do now, hopefully Eren was tired enough to sleep through Levi taking the papers to Erwin and then coming back. He was about to do just that, turning and taking a couple steps towards his desk when he heard Eren behind him.

"Lewi," Eren whimpered, he was sitting up now, his pudgy little hand rubbing small tears from his eyes, he was pouting.

"What is it, Eren?" Levi said softly since he knew Eren was still sleepy. He walked back to him and knelt down next to the bed so he was level with Eren.

Eren crawled over to him and wrapped his arms around Levi's neck, "stay,"

Levi knew better than to try to argue with a sleepy toddler, "ok," he whispered, "I'll stay. Now lay back down,"

Eren did as he was told and Levi sat at the edge of the bed to take off his shoes, Eren was soon clinging to his back, "Lewi, Lewi!" he happily called, no longer any traces of sleep left in the toddler.

Levi sighed but finished taking off his shoes, he stood and turned around, untangling Eren's arms from around him, "lay back down," Levi told him sternly with his arms now crossed, but Eren sat down and pouted instead, crossing his arms and imitating Levi.

"No!" he said, "Lewi play!"

"I don't want to play, I'm tired," Levi told him, hoping it would be enough to convince Eren to lay back down. It wasn't.

"Lewi play! Lewi play!" Eren kept saying, he was now on the bed jumping up and down.

Levi sighed and picked up Eren, then he threw him up into the air and caught him again. He did it a couple times and Eren was laughing and smiling, "yay! Lewi! Again! Again!" Levi did it a few more times and then held Eren with one arm while we walked over to his desk. Since he was somewhat calm now, Levi figured he could finally do what he had intended to do.

"We're gonna take these to Erwin and then come back and sleep, okay?" he cursed at himself for the tone his voice took, it was truly one used for a toddler.

Eren nodded with a look of determination on his face and held his hands out to hold the papers. Levi hesitated but gave them to him, "just be careful, I don't want to have to do them again," he walked over to the side of his bed and slid his feet into his slippers.

He opened the door to his room and was happy to find that there was no one in the hallway. He didn't know how many people actually knew of Eren's condition and he didn't want to have to explain it.

He hurriedly made his way to Erwin's office, and knocked on the door before walking in, not bothering to wait for a reply. As soon as he stepped inside, Eren was squirming out of his arms and asking to be put down. When Levi did, he ran to Erwin's desk and handed him the papers happily.

Erwin didn't even look phased, "ahh, thank you, Eren," he took the papers, "Levi," he acknowledged, "do I want to know?"

"Nope," Levi replied, Eren ran back to Levi and held his hand, "I'll be going back to my room, if you see Hange, tell her to hurry the fuck up,"

Erwin chuckled, "will do. Be good, Eren. Don't cause trouble,"

"Yes siw!" Eren called out and then began to drag Levi out the room as best he could, "play! Play!"

"Yeah, yeah," Levi said as he closed the door behind them. Eren lead them back to the room, every now and then letting go of Levi's hand to run up ahead, only to wait for Levi at the end of the hall to hold his hand again. He was all but skipping the entire way back.

Once they were back in the room, Levi left his slippers next to the door and then picked up Eren to set him on the bed, "sleep now,"

Eren obliged and crawled to the head of the bed and sat there patiently. Levi grabbed the sheet and brought it over them once he had laid down next to where Eren sat. Eren moved to lay completely over Levi, his small arms wrapping completely around Levi's neck as he sighed contently.

"Wuv Lewi," he mumbled against Levi's neck. Levi smiled at the words. He had heard Eren tell him numerous times he loved him. It had become something Eren always told him before falling asleep. And even though he was reversed back to being the age of a toddler, he still spoke the words, well as close as he could anyway.

Levi rubbed circles around his small back, "I love you too, Eren,"