I'm posting this on ao3 there's a lot more chapters out there so if you're interested checked it out. It's called "possessing a loser" by "emmaapple" Yamikumo was a plain guy, he liked hero's, had few friends but one key trait he had was not letting anyone mess with him. He took absolutely no one shit. One afternoon while in his local convenient store buying a bag of chips he was held at gun point. No way he was going to listen to what this dead beat had to say but in hindsight maybe he should have. Or Midoriya decided to go ahead and end his life only to "come back to life" moments after he hit the ground. Only difference was it was someone else from a different dimension possessing his body. Someone who looked almost the same as him but parted his hair different, stood a bit more hunched, had the same interests and motivations but this guys personality was totally the opposite of Midoriya's.