you're in another squad, not Levi's squad. Levi doesn't even know you but you know him because he's the Humanity's Strongest Soldier

One day you we're walking through the hallway to go at the training field and Levi is going to the HQ, when you walked past to him Levi felt something... He felt there's a connection between you and him

Levi's mind: why do I feel there's a invisible thread connected on me and that girl? I don't even know her

He continue to walk, ignoring what he feels