Quirkless Hero: Robin

Izuku Midoriaya was diagnosed quirkless but he was protected by his sister and friends (1A) from others and his parents adore him along with his older siblings. But one day Izuku disappeared, he left his family and friends sad about this. Years later during the USJ incident Izuka and Izuma were about to be killed when someone stopped it. They see two individuals one woman and a boy who stop the attack and defeat the Nomu and the villains. The person that saved them was no other than Izuku and not only did he come back he also brought a wife and a son. His family is happy about him coming back especially Inko having her baby boy back and a grandbaby to spoil him.