After Izuku was told he was quirkless he felt broken and lost and that his dream was forever gone. His mom brought him to a comic book store to buy him a comic book or manga for him to read to try and cheer him up. As he was walking through the store he noticed some old American comic book and decided to look at it. As Izuku was looking at the book and he couldn't help but be fascinated by the guy wearing the yellow and red armor. As he continued to look at it he was amazed and then found this guy was quirkless too but was just very smart and rich. This is the story of how Izuku Midoriya became the real life iron man and soon number 1 hero beginning part of story is heavily based off of "Building from the ground up"

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.