Izuku was born Quirkless to the Number 1 and 8 Heroes. His father was secretly born Quirkless and was disgusted by the idea of his son being the same. He and his wife neglect the child and don't realise that he vanished when he was 7, only realising after two years. He was only found after he turned 14. But Izuku wasn't happy during this time... Far from it in fact.
8 parts