The Marked Trajectory

My quirk is trash.
At least, that's what everyone thinks.
"Mark and Projectile." No explosions. No super strength. No flashy powers. Just a mark... and a throw.
But here's the thing: no quirk is useless if you have enough imagination.
One touch is all it takes.
After that, anything I launch will find its target. Rocks. Knives. Scrap metal. Distance doesn't matter. Obstacles don't matter. Once the trajectory is set, it never stops hunting.
I woke up in the world of My Hero Academia with a second chance at life.
In my previous life, I could barely leave my bed. This time, I'm going to become a hero.
I don't remember the canon perfectly. I only know fragments of the future, scattered memories of events that may or may not happen. But that's enough to know one thing:
If I want to survive, I need to become stronger.
Along the way, I'll befriend a nervous green-haired analyst, annoy the most explosive student in Japan, and discover that my supposedly weak quirk might be far more dangerous than anyone realizes.
After all...
A trajectory only needs one target.