Izuku has never known his father. How could he? His father disappeared before he turned 4 so he never formed any relation with the man. All he knows is that his name is Hisashi and he breathes fire. So what happens when Izuku gets curious and wants to find out more about his father like who he is and where he is? As he looks deeper he might find things that he would wished remained hidden. I do not own Boku no hero academia