Mha+demon slayer

HIIII MY LITTLE NUGGETS👾👾👾👾 THIS IS MHA +DEMON SLAYER AGAIN this is a remake of the last few weeks or months so you used to go to UA and you went missing for 4 years! but you were actually an hashira (blood hashira) and Class 1-A didn't knew that you're a hashira no one knew your identity ||STORY|| a portal from the sky appeared out of nowhere at the arena and you fell out of the portal while you were holding a katana or Nichin blade? With an demon as you land on your feet on the arena you slashed the demon's neck infront of everyone in the arena(P. S: YOU WERE WEARING A MASK THAT COVERS YOUR FACE!) I HOPE YOU ENJOY😭😭😭