They saw him as a monster, he saw him as a friend.

In a world where Humans have powers known as Quirks, and where Dinosaurs were brought back from the dead. Heroes have become the norm, and also people do existing with the prehistoric beasts that ruled the earth 65 million years ago. So much so that humans ended up having Dinosaurs as pets. Yeah, awesome. While everyone in his class had a dinosaur companion, Izuku Midoriya didn't have one himself. Not that he didn't want one, it was just that he couldn't seem to find one that clicked with him. That is, until he meets a certain gene splicing experiment turned theme park monster of a dinosaur, and ends up breaking the rage and hatred fuelled beast's tough exterior, and becoming his life long companion.

(I've seen TikToks by Steven Luna where he has a custom made self insert Izuku figure be buddies with the Spinosaurus from JP3. And given the past the Spino has had in the lore of Jurassic Park, I could see Izuku making the beast of a dinosaur into a new interpretation of Man's Best friend.)

(made image using Google Gemini art, and I don't plan to profit off it nor do I want to. I do not own MHA Or Jurassic Park.