The seven legend swords

Thousands of years ago. The planet earth faces a crisis that nearly brought them in the brink of extinction. Demonic beings that came from the underworld run amok in the earth's surface. They brought despair and fear wherever they go. It was at this moment that humans gained abilities and are now able to fight back with these creatures. seven heroes and seven swords appears as the hope of humanity. With those existences the earth was able to wipe out their enemies and finally experience peace till to this day. in the present time for some unknown reason a slave from a thousand years ago got reincarnated. Follow the journey of our mc