I have this idea where Izuku Midoriya gains the Super Soldier Serum, essentially becoming an alternate version of Captain America. The inspiration came from considering how I'd need to tweak the story for Izuku to receive the serum.
If we adjust the timing of All for One's attack on All Might slightly, All Might would've been killed. Additionally, we could introduce a scenario where All for One fails to rejuvenate fast enough, leading to his demise.
Before the showdown between All Might and All for One, let's say a scientist, Dr. Shinka Nakamura, gets abducted and forced to work for All for One. He creates an imperfect serum for Shigaraki, but during the attack, Nakamura escapes to UA for safety.
Following All Might's death, Dr. Nakamura and David Shield move to Japan to work on creating the next All Might. By the time Izuku is 14, the project is complete, 10 months before the entrance exam. The Hero Commission stages a contest, posing as a boot camp, to identify candidates for the new serum.
This boot camp could span an entire arc, showing Izuku's growth physically and mentally, akin to Captain America. Momo Yaoyorozu could be involved due to her family's financial support, potentially leading to a relationship arc with Izuku.
