Servants Of The Night (levi x reader)

The rough life of Levi Ackerman is going in a different direction as a strange girl enters his life.
The strange girl claims Levi plays a critical role in the survival of the universe and must come along to train for battle against the Titans or else the universe might be lost forever. Believing both the situation and this strange girl after some convincing, he oddly willingly agrees to the proposal, there's something exciting about this whole situation, surely the right choice was made.

But what if this strange girl speaks only lies. Or what if somebody is orchestrating all of this. How could an ordinary man be this lucky, or unlucky, depending on the turnout. Time will tell.