Eren POV
How did this happen, how did I become like his" I thought as I watched Levi shouting at Hanji. "How can you be so fucking stupid, you shitty four eyes!" yells Levi mad. "if he could be anymore red than he already is, he would explode" I thought and snickered a little. "I just made an elixir and wanted to test it on Eren, and to see what is does to his titan form. Obviously it failed" says Hanji innocent "ju-just wanted to test it. Have you looked at him, ofcource this whole thing failed!" as Levi yells this he took a few steps forward her. "maybe I should explain what happened".
Half an hour earlier
I was walking through the hallway to go to my training, util I saw Hanji run towards me "Eren I need your help with something" I could tell is was bad news just by the look in her eyes. "I can`t Hanji-san I have training right now" "yea I know, so I told the one who is in charge of you that you can`t come and that you are helping me" my jaw drops and I look at her with big eyes. Before I can say anything, she grabs my arm and drags me to her lab.
Once we`re at her lab she makes me sit on a chair, I`m getting a little nervous as I watch her getting a needle with something in it. "okay Eren, I need you to relax for me, I just want to see how your body reacts to this and if it effects the titan in you" explains Hanji and I can see she is getting excited for this. I take a deep breath "okay let`s get this over with then" and I give her my arm. She injects the needle and gives me the weird stuff. Just when she is done Levi storms in "oi four eyes, care to explain why the brat is not as his training right now?!" he said frustrated. "gladly midget, I`m just doing a test on Eren to see how he reacts to it, that's all" when she talks, I fall over to the ground. I wrap my arms around myself and scream in pain, my whole body feels like it`s on fire and I`m about to explode. Levi runs to me and grabs me by the shoulders "Eren! Eren talk to me, what`s wrong!" I look at him and I see the panic in his eyes, just when I`m about to say something the pain gets worse and I scream louder. The pain is too much and I black out.
When I wake up the first thing I see is Levi "Eren are you okay? Say something" I open my mouth and the only sound that comes out is a whine. I`m looking at Levi with big eyes and try it again, but with the same result. I start to panic, I stand up and I feel that there is something wrong. I look down and see that I`m quite furry and that I`m at all fours. I look at Levi and make a little noise. "Eren I need you to calm down, okay and then we can figure it all out" he says and past me on the head. Levi stand up and turns to Hanji and burst out screaming at her "so much for staying calm" I think.
Present
And that's where we are now Levi is screaming at her for 15 minutes now and just when I was about to interfere someone walks into the room. I look up to see who it was and I see Erwin. Erwin looks at me and I shrink a little, he clears his throat to get the attention. Levi and Hanji finally shut up and turn to Erwin. "care to explain why there is a dog here?" he asked and raised an eyebrow "thanks sir, now I know what I am" and I smile in my head, the whole time Levi was screaming I never found out what I am. Hanji starts to laugh "that dog over there is Eren, Erwin" his eyes are getting wide and looks at me again "Eren is that you?" I stand up and nod. "holy mother of god, if there is one, Hanji what did you do this time, wait don`t explain, just make him normal again before the military police notice there is something odd going on here" and with that he walks away. Levi sighs "okay you shitty glasses you work on this right now and you brat, you are coming with me" he walks in to the hallway and I`m right after him.