Rannie Lea (AOT OC Story)

I'm Rannie Leah, Jeager
Eren Jaeger, my brother, Many people say he's a hero, his titan powers help humanity and Paridies from other titans and our other enemies. Nothing further from the truth. Hundreds of people died fighting to protect him and their island. And for what? his fake act, his broken promises. years later he became evil as repayment? People start to say he turned mad. I saw his evil before anyone else when I was little.
Don't get me wrong I used to love and look up to my brother; I was naive back then. I started cadet training to make him proud of me for once; to be like him. It backfired, he got so mad and almost tried to kill me. I still have scars near my eye, leg, and ear from that day. Both physical and mental scars.
Annie, Riner, and Berthold, acted as civilian scouts for years. During that time they became like family to me. Especially Bert who's my adoptive brother.
Even though they turned out to be the traders/ titans trying to destroy humanity on Paridies island / Wall Maria, I still stayed with them while others called them and me traders. How could I, they treated me with more skills, love, and kindness. They where more loving, careing and put up with me more than any other of my biological family members. They weren't entirely monsters. They were fighting for their country, their friends, families, and people were treated unfairly but promised change if they became honorary titan Warriors (Elians in Librio and Marley. And I was soon to come back with them.

Then during the battle to retake Wall-Sicongia, town things turned for the worst. Not only did they lose but I lost the person I loved the most and like a true brother to me, Bert. I saw part of the battle and watched helplessly as they killed him. I know who did it/ who to blame. My brother Eren.
I came back with Riener to his hometown. I made friends with the other warriors and 4 young trainees, including Riner's cousin Gabi. but I changed. Sorrow, anger, and vengeance took over. losing Bert, the change, the secret evil of my brother Eren. I'll do anything to change and get revenge.
I started to train with/ from someone, he promised to help me with these feelings, and with revenge.
Later I figured out that I might be heading in a dark path with a certain person recently helping me train to become stronger and get revenge. But there is little chance I can turn back. I have to get revenge on my brother, for what he did to me, for what he's done to Bert, others, and to stop him from hurting anyone else. I think this as I see the young trainees first innocent but become corrupted like me .