Berserker

It's year 2000 and it seems everyone is still here. Eren and Alice are here too! I loved going to school to see them. After my dad passed they were all I had. I lived alone and thrived revenge against his killers... Oh... My name is Jack but everyone calls me "Zero". I'm a Junior in high school. It was a boring year for the most part till that day... One day Alice and I were walking to second period and we saw the sky go black like it was night time. A aircraft of some sort descended and let off a poisonous gas that killed most of the people around us and we came to find out it killed millions. The aliens came to Alice and I and beat the shit out of us. We had no chance. Eren was nowhere to be found but even then he wasn't much help. The gas that killed millions also gave people special abilities we came to find out. Close to death Alice and I were able to use these abilities. She was able to unlock them before I could. She has the ability to move at incredible speeds. I wasn't able to unlock them at first. She was fighting them while I helplessly watched. More aliens came and we both got beat up some more. Then finally... I awoken from my severe pain and suffering. I became a Berserker. The power of super strength. It got me the name Zero The Berserker. I was the only being with the ability until SHE took it... We were able to beat the aliens with our combined power and speed and we couldn't move far for a while. We rested up near by and finally found Eren. He had also unlocked an ability which was a barrier. We didn't know much about how we didn't die from the poison and how we acquired these abilities. But soon after is where everything went really wrong..