Humanity's Greatest Weapon

You were born and lived outside the walls with your parents, you had a strong connection with titans and they never bother you or your parents. You loved being free until one day your whole life change, your parents died by the Military Police because they had some bad stuff going on before you were born.

Your heart broke when you saw your parents get killed and something cracked inside of you. You have two things that make you a monster, well that's what people are going to say. You are a Titan shifter and have a special eye which is your left eye. You became cold and heartless after your parents died.

One day, you get a surprise encounter with some people on an expedition! Will you a threat or a help to humanity's survival?