Eren and Armin have been friends for a very long time even though it surprised people because of how different they are.
Eren is energetic, problematic and very extroverted, he acts before he thinks and likes to go after what he has his eyes on no matter how hard it was, Eren didn't care so much about his grades but he was sure to never fail.
On the other hand Armin is so calm and you can say a mix between an introvert and extrovert, he knows when to talk and when not to, he always thinks before taking an action and solves his problems and his friends' problems with his smart brain and he was always first in his class.
And it was like a dream coming true to them when they went to the same university even if they went to different schools but still they shared the same dorm room and their life became one like how they always dreamed it will be.
Another thing that became an obvious difference between the two boys is that on sunday evening Eren would go out on dates or drinking at bars with his friends while Armin would go to the library to read it's not like he doesn't like people or get asked out he actually has a girlfriend of two years soon to be three Annie Leonhart but since they went to different universities they were online dating until they actually get to see each other and it was known that Armin wasn't the type to party or drink too much unless there was an occasion.
So Eren went to dates, bars and such and since it wasn't really Armin's favorite places to be he preferred a place he was more comfortable in which is the library.
But since the finals were around the corner Armin forced Eren to go with him to the library on a sunday evening when Eren should be having fun instead.
"C'mon don't be that upset you have to study for the finals" Armin and Eren were sitting on opposite sides each has many books and papers spread next to them Eren having messier surrounding than Armin because he has alot to study unlike Armin who has just to revise.
"You should have told me to study earlier this is too much and I am about to lose the last amount of concentration I have"
"Well I told you but you never listen to me" Armin had a smirk on his face which made Eren roll his eyes
"Hey Armin how's studying going?" A girl with short black hair and grey eyes pulled a chair next to Armin and sat down she was wearing a black knee length dress with a white shirt underneath she got Eren's attention he never saw a girl that pretty before.
"It's going good so far I am just doing a little revision to remember but Mikasa why are you still working don't you have to study?" So Mikasa is her name.
"Don't worry I study whenever I have nothing to do you know I really need that job, so tell me how are you and Annie doing?"
"We're doing great thank you for listening to me the other day"
"No problem Armin we're friends after all"
"I am sorry to interrupt but ouch Armin I am hurt you didn't go to your best friend for a relationship advice" Eren grabbed both their attention to him Armin smiled while rubbing the back of his head
"I am sorry Eren but you were out with your friends and I needed someone to talk to immediately and Mikasa was there"
"Don't worry I won't fight you for your best friend" Mikasa smiled as she turned around to face Eren, when Eren saw her smile his heart skipped a beat and started beating so fast he felt his cheeks sting so he smiled to try to hide the blush on his face
"Well I won't mind losing to you my name is Eren Yeager" Eren stretched his hand out and Mikasa shook it Eren felt a shiver down his spine her hand was so soft and her grab was gentle "Mikasa Ackreman but I have to say Eren was that a pick up line because it was bad" Mikasa's words caused Eren's face and ears to turn red and Armin to chuckle
