It's no secret that Levi Ackerman is a very strong yet distant man set on keeping the most intimate details of his life hidden away from even his own squad, one of those details being the fact that he once had an older sister in whom dedicated everything she had to ensure his survival in the cruel world they lived in. At last, Levi's new squad will learn her story and how Levi became humanity strongest man.

It's rarely known where the famous duo of Humanity's Strongest Soldiers came from since they didn't arrive together. (Y/N) (L/N) and Levi Ackerman are two sides of the same coin, but others aren't aware of why. Battling and never leaving each other's sides, (Y/N) and Levi are a conundrum for everyone to figure out. One can only wonder why they're so inseparable. This adventure facing titans and unexpressed emotions is a bumpy one and all you can do is enjoy the ride. {Mature Content}

Many years ago on your first expedition, you lost everything you had. Your twinbrother Levi and your two friends from the Underground nowhere in sight as you had gotten lost outside the walls. So you go on a journey, determined to see your brother and friends again. But will Levi recognize you? And what if there is a huge secret you don't even know about yourself? ____________________ •she/her pronouns for the reader insert• •tw for canon typical violence• •spoilers if you haven't watched the anime fully!•