The story starts off, as Spartan #117 better known as Master Chief takes down the Covernant Mothership and sacrifices himself for the greater good of the UNSC.
He later finds himself reincarnated as Izuku Yagi the son of the #1 Hero Allmight & #6 Green Telek. He found out that he was Quirkless but was born with Bones as strong as the strongest Metal on Earth and skin 5 times as strong a a Rhinos Hide.He is Neglected by his Parents and Bullied by his twin sister (Izumi Yagi) and Ex-Friends Katsuki & Katsumi Bakugo and Shoto & Shoka Todoroki.
Here is his Story of How he becomes the First Quirkless Hero and the Return of the Master Chief.
I do not own MHA or Halo as they both go under Kohei Horikoshi (MHA) and Xbox Games Studios (Halo Infinite)