I'm not that kind of hero

Since a long, long time ago. The gods from another world have been taking people from Earth and turning them a Hero. But sometimes, the heroes succeed with their mission and went back to Earth with extraordinary, if not, supernatural powers.

The cycle repeat and those heroes breed, sometimes with a normal human, and sometimes with another hero.

But what's it like to be the son of the most famous heroes of all time?

I think I know, but as I begin my own adventures after my parent leaving me and my two little sisters just for the sake of defeating demon lord from another world, I discover just how much of a challenge it really is to live up to the legend of the great Ranger and Alchemist. To make matter worse, as if it isn't enough dealing with the delegates from the Hero Guild and making sure that I already give my sisters their lunch money, I somehow begin to uncover a secret plot that could pit the normal human and the hero against each other in an all-out war.

But how can I know if my efforts are only helping the cause or working right into the plans of his enemies? Before I can know for sure, I have to learn the difference between being a hero and being the son of a hero.