Music by Cavelight

I will also be posting this on Royal Road.

A young man who encounters an impenetrable force of a human being - brought to the back of a college campus and beaten to all hell before another man walking beside him is dragged into it as well, but this man can do something no one else can, making him the strongest. After beating the weak, the strong man spat at the one beaten within an inch of their life, quickly vacating the area, fully believing the one beaten was the same as all the others.

The one who was beaten, this young man became obsessed with becoming strong after this point and time.