when you were little your parents found a portal leading to a different world. They were killed by demons after they entered and they were abt to kill you too when urokodaki showed up and killed the demon, saving you. He took you in and raised you as his own. He trained you and you passed the final selection and now a hashira. They found out abt your power and the portal was found it. One day you were at the meeting when Kagaya was abt to tell you, you were going back in a hero school in Mha