The world of Echeus. This world was invaded by the Great Demon Lord once, the humanity can't fight for themselves until the heroes comes out. Each of them had different characteristics that they hold. Faith… as long as one doesn't give up he will definitely win. Hope, can turn imaginary to reality. Charity, the noble medic of the field. Fortitude... The greatest knight that the world has ever seen, can block even the most powerful spell of a dragon. Justice, the sword of the group, the bearer can travel through speed of light and attack as if he was the death itself. Temperance, the wise sage that everyone can rely on, one can made meteorite out of nothing by having this gift. Prudence, can see through lies and predict the future the strategist of the group.

The seven heroes fight the Great Demon King and after the hellish nightmare they manage to seal the Great Demon Lord and cast him away from the world.

After that the Heroes whose origin is from the parallel world decided to stay at the world of Echeus. 5 peaceful years have passed and something strange happens.

Heroes start to pop up in different empire and continent of the world. And soon the Heroes became the main forces of the country. Although those heroes cannot compare to those first 7 Heroes they still possess a tremendous power that can invade a small country. The natural balance of the world starts to distort due to Hero summoning and as the consequence the seal that stops the Great Demon King from appearing starts to crack.