Long ago... In a different day and age. There was a man named Katsuki Bakugou. A strong warrior and hunter. He was a rough and angry caveman who went by many, many, names. But only one name stood out in particular, Bakugou the conquerer. He had taken control of many tribe's and clans in his time, earning him the title of chief.
You wake up in a lush grass field, sore and confused. Just before this you remembered walking down the streets of your hometown before a drunk driver had went a little too fast and his car went out of control and hit you. And now? Now you're living in the past, something your world once was but moved on from.
You woke up sore and confused, sitting up while your eye's adjust. You begin to look around, soon you see some dinosaurs running in your direction, almost like they're running from something or someone. You see a blonde man on a horse sized dinosaur, hunting down a smaller winged dinosaur.