Half and Half (Oblivious!Eren x Reader x Slight!Yandere Levi)

Acceleration

"Eren, can you transform into a titan any time you want?" You ask while you walked with him in the open fields where no titans are visible.

Eren nods in response, keeping his eyes on you, ignoring the fact that he stumbled a couple times while he strolled.

"I need to go find my teammates. I wonder how Levi and the others are doing..." You spoke.

Eren frowned in curiosity as he heard you say the name "Levi."

"Levi?" Eren repeated.

"Ah, yes. He's the Corporal. He and I have been fighting together with the others for years against the titans."

"Titan?" 

"Those giants who eat us. If we don't fight against them, humanity will cease to exist." You explained.

Eren remembered that you told him he was half human,half titan.

"I'm... Titan?" Eren asks, pointing at himself as you gave him a hesitant nod.

"Ehhh, sort of. I don't know. You're half and half." You shrugged as he scratched his head.

"Are your feet cold?" You asked.

Eren couldn't feel his feet. They were too numb to be felt.

"Feet?" Eren looked down at his dirty bare feet and shook his head.

"Yes." He indirectly responded.

"Well, we gotta get you to my people so you can stay warm and safe. Staying out here is very dangerous. What do you eat out here?" You questioned him.

Eren couldn't respond to that. He knows what he eats, it's just that, he doesn't even know what it's called.

"Do you eat animals? Berries? edible trees or something?" You raised a brow, waiting for his answer.

"Human!! Titan!" Eren shouted as he pointed west.

You turned to see steam released into the atmosphere from afar. You couldn't make it out but you were able to see the soldiers, gliding into the sky and taken one by one from the titans that were crowding them. You couldn't hear anything from over there. 

"Eren! Can you control your titan powers?" You grabbed a hold of his shoulders.

He nodded a yes response while you wore a concerned face.

"Will you transform and take me over there where the humans are? Please??" You pointed in that same direction while Eren thought for a moment.

He didn't want you to be in danger anymore. But if he didn't want to take you there, that would mean he was against your orders. Eren would never try to go against you. He strictly wanted to do as told. Only by you.

"Soldiers! Hold your weapons! We need to retreat now!" Hanji commanded, keeping her distance from the titans around her while a few of her surviving men followed her, riding on their horses in attempt to escape. They lost too many men. Three squads were down, half of Hanji and Erwin's squad were still alive, and the remaining soldiers from the other squads were struggling to keep up, helping one another. The ground was still slippery and muddy while Eren's now shifted titan form sprints to the area where war was being held at. He clamped you in his hands, making a small hole, enough for you to see what was going on. Until it was clear for you, you commanded Eren to help your comrades and aid them to fight against the giant titans who were about the same size as him.

"Be careful not to kill any of the squadrons! Make sure you don't kill the humans!" You ordered Eren as he obeyed and rested you on his shoulders.

"Titan afoot!!! Coming straight at us!!!" The men shouted as Hanji sees Eren's titan form running towards their direction.

"I've never seen that one before!" Hanji commented as she rode on her horse, avoiding the titans.

You held onto Eren while he fought against the titans brutally, tearing them one by one. The soldiers froze in fear as they watched Eren angrily battling against the titans. Eren made sure nothing would reach you and keep you out of danger... Until an arm came and swept you off of his shoulder.

"AH!" You panicked, thinking it was a titan who managed to grab you. You turned around to see that you were flying in the sky with an arm to support your weight.

"L-Levi!" You called as he held onto you tight, getting you away from the battlefield and into the safe area where most of the soldiers stood, along with Hanji and Erwin.

After Levi had set you down, he holds you in his arms, hoping you'd know that he was concerned about you. 

"I'm so glad I found you." Levi pulls away and noticed that you wore your cape around your waist like a skirt that dropped down above your knees.

"Where the hell are your pants?" Levi asks.

"Forget about that! We need to get as many men to help that titan defeat the others! He's on our side!" You pointed straight at Eren while he struggled to fight against the titans. 

Levi looks to see that Eren was wearing down from exhaustion. He was using too much force on his muscles to eliminate every single one of his opponents. 

"What the hell is that?" Levi wondered.

"We have to help him!--"

"No. Have you seen everyone? They can't fight against those things. Plus, I'm almost out of gas for my gear. I would rather not take the risk. Now get on Hanji's horse and get out of here." Levi demanded.

"B-But...!" Many minutes later, Eren took down the final titan and began to collapse.

Smoke was everywhere around that area. And the bodies began to evaporate into thin air. You saw most of your men who volunteered to help Eren come out of the smoke screen. it was far too difficult to depict which one was Eren, now that all of the titans looked rotten and old. With that, you pushed Levi away when he was holding onto you, and ran to find Eren.

Levi was able to catch up with you and grab a hold of your arm.

"What are you doing?? Stop." Levi asked.

"Let me go!! I need to find him!" You struggled to get away from Levi but his grip just tightens.

"Who?" Levi questione you while you managed to break apart from him.

"Eren!!" You ran away from the confused man.

As you approached to the scene, Eren began to emerge from his own titan form from the area of the neck. There, he seemed tired and almost half asleep. You rushed to his side and supported his weight as he leaned against your chest.  You wrapped your arms around his half-naked form (Thanks to your pants) and rested your head on his neck.

"Thank you so much, Eren. You helped us." You told him, making sure he hears every single word you said. And he did.

Eren's tired arms began to rise and cling to your shirt until Levi came between the two of you and rudely shoved the poor boy away as he held onto you.

"Levi what are you--!"

"Secure this monstrous beast. Make sure it doesn't escape. If it does, kill it." Levi ordered his men as they obeyed and dragged Eren away with his arms.

"He's not a thing!" You fought Levi again but this time, you were practically losing.

"(First), listen to me. You're more precious to me than anyone else. I need you to be safe. Go with Hanji. We'll take care of this." Levi commanded.

"L-Levi!"

"Go. Now."

You began to calm down and forfeit to fight against Levi, hesitantly obeying his orders. 

You hoped Levi was doing the right thing...