@Gladiator02
It's been a few generations since their time, so highly unlikely. In chapter 12 the principal was reading a letter by the Hero of the Wind and mentioned that his grandfather told him about the fifth hero (not sure if said grandfather was a Hero of the Wind, or his descendant himself as well).
> demon fights mc with the intent to kill.
> mc turnes out to be very strong
> "You are dangerous i'll have to kill you"
instead of what? as if you hadn't planed to kill him.