@thealtdeku It starts when Izuku is 5 years old, and takes about... 152 chapters to get to High School. In that time, it definitely doesn't follow canon. Once they get to high school, while some canon events happen, they are different because various people are not there. I don't know what is season 6 of the anime but it's more a butterfly effect, where initially things aren't that different but become very different. You won't get spoilers from the fic because while some events are 'similar' they are completely different. I'm posting the meeting with the Shie Hassaikai at the moment (at 244 chapters) and while no one on the Shie Hassaikai side has changed, the interactions and other things with my MC is very different.
So no spoilers :D