Anitoons17
In this story, Izuku retained One For All after defeating Shigaraki. However, something unfortunate happened to him. Just before Shigaraki died, the villain used one of the Quirks from All For One to teleport Izuku to a random place in the universe as his final act of villainy. Eri was also teleported alongside him as well after she'd run onto the battlefield to hug him, thinking that the fight was over. This devastated everyone, especially Inko and the many women who had fallen for him.
Izuku was sent far across the galaxy to Jarilo-VI, arriving just as The Astral Express reached the frozen planet. After assisting The Nameless and the people of Jarilo-VI, Izuku left with The Astral Express, hoping this journey would one day lead him back home.
Over the next 13 years, Izuku continued searching for a way to return to Earth. In doing so, he became renowned across the galaxy as a Legendary Intergalactic Hero. Eventually, he left The Astral Express, having fallen in love with many women. He married them all and had children with each of them, with some mothers having more than one child.
Now, Izuku lives on a massive space station that also functions as a spaceship, alongside his wives and children. As the father of a large family, Izuku works with his wives to raise their many children and keep them in line.
Although Izuku loves his new life, he still yearns to return to Earth. When he learns that Earth has finally made contact with the wider galaxy, he wastes no time inviting his mother, All Might, Aizawa, and his former classmates to his space station. They all happily accept, overjoyed at the opportunity to reunite with him-especially Inko and the women who still have feelings for him.