Help you smile [Attack on Titan-Ereri/Riren]

Chapter I: Meeting Levi

As said in the description I frankly suck at this writing at this style of writing but I'm excited for the story. Please feel free to give me constructive criticism or make me aware of any grammatical errors. I hope you like my story.
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Hello, my name is Eren Yaeger and I am a senior at Sina High. I go here with my half-sister Mikasa and a good group of friends I've known since elementary and middle school. I'm not the most popular guy and there are a couple things about me people don't really like about me but I don't really care.

Some of my friends include: my best friend Armin, Marco the mom friend and who is literal saint, Jean who I don't like, Sasha the food addict and Connie who will do anything just for the sake of doing it. Also Ymir, a scary brunette who is always with Krista her girlfriend, who in addition to Marco, is one of the sweetest people I've ever met. We also sometimes hang out with Bertolt, Reiner and Annie but they're a bit of a loner trio but they're cool. School has been going on for about a week now and I plan to make the my last year of high school.

I am currently being beaten up by three guys twice my size. I wasn't asking for a fight, if I was planning to I would have at least had Jean with me. Despite the fact that I hate his guts, the horse face is a decent fighter. Anyway it's not like I go around picking fights, Mikasa gets really mad and she's not the kind of person you want angry at you.

I had gotten a couple good punches in on two of the guys but I was quickly overpowered when the third guy joined in. As to why they were beating me up in the first place, it went a little something like this:

"Hey you faggot why'd you hit me?" Said ugly bully #1.

For the record I accidentally bumped into him while running to get to class.

"I'm sorry were you talking to me?" I asked sassily, probably not the smartest choice.

"Yeah idiot watch where your going," he replied angrily.

Now I could have just left to my next class but this guy was pissing me off.

"Sorry man your ugly face was just so distracting."

I think you can work out what happened after that.

So now I'm on the floor getting kicked and I'm pretty sure I've broken a couple ribs at the very least. No teachers or students were around because passing time was almost over and this part of the school doesn't have much in it. My luck is just fantastic don't you think? Just before I was about to pass out I heard a voice that I didn't recognize.

"Oi, brats!"

Before I knew it I had stopped being kicked and was hearing the sound of fighting going on above me. Ugly bully #2 fell onto one of my legs and by the time I had gotten him off I looked up to see that the other two had been knocked out on the floor as well. I looked to see the person who had done this.

Even though I was on the ground, he looked pretty short. He wore black jeans and a dark t-shirt I couldn't quite make out the design of, my vision was a bit fuzzy from the beating. He had a bored expression on his face and despite shortness of his height he was really intimidating. That coupled with the fact he just beat up three large dudes by himself.

"You okay?" He asked in a monotone voice, looking at me, holding out his hand.

"Yeah, thanks!" I took his hand and he pulled me up.

This guy was ridiculously strong, he didn't even look like he had been in a fight. He looked at me with a dull expression and I stared into his silver/grey eyes. Who is this guy?
He nodded slightly, let go of my hand and turned to leave.

"Wait!" I call after him, "How the heck did you do that, what even is your name?!"

He turned and looked at me with the same dull expression. It honestly felt like he was looking into my soul. Eventually he turned back around and walked away at a quick pace.

"Hey! I yell after him.

I couldn't move very fast and I lost him around the corner. Just then the bell finally rung. Crap! I think and run to math.