Ok, i've been thinking lately, and if Izuku's quirk is One for All, and OFA was created by All for One/Hisashi Midoriya, then Izuku has a connection to AFO. Not to mention Izuku HIMSELF came from Hisashis' sperm cell/shares blood with AFO. So, technically, he was born from the holder of All for one, and when he was 15(idk his age), he met All Might and became the holder of One for All as well. I'm convinced that in the future, he will meet a villain as strong as All for One and he will be forced to combine One for All and All for One into All for All. (Aizawa = None for Yall sorry i had to) Not to mention Inko Midoriya, Izuku's mother, who is one of the Shimura siblings. Her brother, Kotaro Shimura was the sperm-doner of Tenko Shimura, also known as Tomura Shigaraki. These facts prove that Tenko and Izuku are related by blood and are cousins. Though after Tenko lost control of his quirk, which ended up killing his family, Inko and Hisashi adopted him, making him Izuku's brother.
:)
Ok, im done ranting! Also, should I make a rant/theory book? Like, were i would put my theories, things that happen to me, and my random thoughts? Thanks for your opinion!
~Alex