Living on your own for monst of your life, in a city somewhere on the outskirts of shingashina. You had found your fathers old scout gear, your parents being dead you decided to grow stronger. From the age of 12 to Y/a (your current age) you trained on your own and became efficient and perfect. One day, the attack of shiganshina were the colossal titan breaches wall Maria, as well as the armor titan you decided to help. Now hiding in your faters scout uniform you, helping the people evacuate. Levi spots you and trys to confront you on why your scout uniform is from the recent expedition.

Levi Ackerman is your little brother, after being sperated from him at the age of 18 and him 8 by the survey corps, you wait for the day for you to reunite. The day finnaly comes without your knowledge, for 3 of your close friends in the survey corps go on a secret mission to the underground to get your little brother who is now 26. Unbeknownst to them you two were related.

*observing her from a roof top in the underground*