One day, when Grisha Jaeger was out researching medicinal herbs, he was startled by the sound of something crashing nearby. Curious and afraid it might be a Titan, he decided to check out what exactly crashed in the forest. However, to his surprise, he found a mysterious alien pod with a Saiyan baby inside. Could this baby be humanity's last hope?

Born as a human with the heart of a fishman, Izuku has lived his life dreaming of a day where he can enact his adopted mother's wish to bring the residents of Fishman Island to the surface and live among the humans. However, his own heart holds him back. See as Izuku becomes a hero for not only humanity, but the fishmen and merfolk of his homeland.

In a world where 80% of the society have super powers dubbed "Quirks", Izuku Midoriya aka "Deku" a Quirkless 14 years old boy finally obtains his Quirk, Sharingan: The Copy Wheel Eye, to become the greatest Hero.