When a homeless boy comes across a mysterious serum while running from the authorities in Marley, what will happen?

Spending your life in the walls, while growing up you were very close with your family. Your father was a member of the scout regiment along with your older sister, your mother just simply worked as a shop keeper but was liked by most as well as the rest of your family. You were 11 and you were out running errands for your mom, but while you were out, something happened that changed yours and everyone's way of life forever. Warning: Includes some bits from the manga! Y/N-your name L/N-last name E/C-eye color H/C-hair color

Why do my loved ones always die! Why has everything always been taken from me ~ Warning there may be some lewd things in this story and it contains graphic depictions

A former member of Marley's warrior program is given the ultimate opportunity.