When the world ends, their only hope is to send one Quirkless man back in time. Back in his 14-year-old body, will Midoriya Izuku be able to save the world that shunned him all his life? And will he finally be able to become a hero this go around? Good thing he had time as a vigilante to practice.

When he was a kid, Midoriya Izuku was hit by an unknown Quirk. He was found a few days later, unharmed. He was gone for just a few days to the world, and he never told anyone where he'd been. Who would believe that he'd been sent back in time several hundred years to the Pre-Quirk Era? That he'd been adopted by a pair of circus performers who gave him the name Richard Grayson? That he, Quirkless Midoriya Izuku, had become Robin, the Boy Wonder, famed partner to the Old Hero, Batman. Yeah. Nobody was going to believe that. At least he could become a LEGAL hero, now.

Swan Dive Summary The Slime Villain Incident, and the events leading up to it happen one year earlier. Izuku, broken and lost in the face of All Might's words, decides to take Kacchan's advice. But a familiar Underground Hero won't let a young life end so quickly. How will a simple right-place-right time scenario change things? OR: Aizawa Shouta saves the life of Midoriya Izuku and finds himself with a new apprentice and surrounded by a quickly growing family circle. What has he gotten himself into? Heavy Dadzawa and Dadmic. Auntie Nemuri and eventual redeemed Bakugo.

Midoriya Izuku has always had a sharp mind. He aims to transfer to the U.A. Heroics course from the Support Course. He knows he's smart enough to get in, and he's always been gifted with making things. He just never thought his items would be of use to him before U.A. Tsukauchi Naomasa never expected a phone call from a twelve-year-old child who'd been kidnapped by villains. Who was still in the hands of villains. But he'd be damned if he let this kid die. A fic about Izuku being kidnapped by the LoV, but staying on the phone with Tsukauchi, Eraserhead, and Present Mic the whole time.