Give and Take: Origin (смешанная)

2 years after defeating All for One, barely escaping with a life threatening injury Yagi Toshinori finds a young boy and his father cleaning his favorite beach. They quickly become his favorite people. A young boy with green hair and a wide smile. His handsome widower father with white hair and a face full of freckles. The Midoriya's were great.
He watched as Izuku grew, into a fine young man. He had the heart of a hero. He was sure there was no one better to take his quirk. To be his successor.
There are a few snares however;
Hisashi- The man who'd become one of his closest friends is a small part of All for One, his worst enemy. Sure, he's just the happy memories broken off and made into a separate being by a quirk. He didn't remember killing Nana. Toshinori liked to think that made him a different person entirely. He knew his friend. He'd known him for 3 years at this point.
Izuku was All for One's son. He'd inherited his father's quirk. But Toshinori trusted his gut. He trusted the Midoriya's. And who better to take on the mantle, then the child of the man who'd technically created it?