B/f = Best friends name
When the wall fell, your were on a blind date. Your best friend b/f forced you on it. No one ever asked you out because everyone thought you had a dull appearance and dry sense of humor. It was sad because you were 22 and still single. You were bored, your e/c eyes wondering to meet your Best friends, who was "Making sure everything went right, totally not stalking you". You all of a sudden heard a loud crash. Great, I wonder what that was. People started running, and there was a huge titan with no skin. 'The hell?'  Was the only you thought before b/f grabbed your hand and ran.

                              ~~~~~

You and b/f managed to get on a boat with an annoying little kid screaming "I WILL KILL ALL TITANS". Annoying. "Hey b/f, I'm gonna inlist in the military, and your going with. I'm only deciding this because we have nothing better to do." You told them calmly. "Agreeded, besides, if we join the Military Police, people would pay money to feed us!" You rolled your eyes at that. Real reason why you decided that was because, you were strong, why not take advantage of  
It?
               ~~Once you inlist~~

You were sick and tired of Keith Sadies yelling at everyone. You could care less about everyone's name. He finally came up to you and you saluted. "AND YOU, WHATS YOUR NAME AND WHY ARE YOU HERE!?" He yelled. "SIR, MY NAME IS F/N L/N, AND UNLIKE EVERYONE ELSE HERE, I'M NOT TRYING TO IMPRESS YOU OR ANYONE. AND I SIMPLY JOINED BECAUSE HUMANITY CAN AND WILL TAKE ANY SACERFICE NEEDED. I AM WILLING TO DIE ON COMMAND, SIR!" You shouted back. What you said seemed to shock people, but not Keith. "YOU WILL MAKE A GREAT SNACK FOR THE TITANS" He shouted at you, but you could'nt care less.
After Keith's whole shenanigans everyone ran 20 laps, then went to get dinner. Everyone was eating and talking until you heard yelling, so you put your spoon down, and glanced over. It was the same kid from on the boat over 5 years ago. Annoying. You finished your food. Still arguing? You sighed, stood up, and dropped your plate, and it shattered everywhere causing to get everyone's attention. "Stop acting so immature, it's annoying. We all get it,  your mom died, so what? We all lost something, and no one take that as encouragement. We're all old enough to not act like children, so don't." After that, you left your plate, broken, on the floor and left. You went to your dorm, showered, brushedyour teeth and hair, put pajamas on and went to bed. Your thought being 'And we all have to live with that Eren kid, great' then you fell asleep.