You had been the last person to die and go to heaven since you lived a long life until you where 97 years old,Levi and you had children and grandchildren but he died before you and Eren is your big brother,you reach Heaven and everyone welcomes you,Eren said that your parents Gresha and Carla made the choice to reborn and have another life but you didn’t like that so now you are getting revenge, you go to a school on Earth and everyone else follow and they plan to stop u but everyone is human