Hero the Maximum

I want to become number one. It didnt matter what category he became number 1 in, but incompetent South Korean highschooler Han Gangchi, wanted solely to be the best in something. He stumbles upon an astounding talent in him and That was the heros power? In a peaceful time where evil and good are indistinguishable, he and the other heroes begin their merciless purge of the villains!