Daetayongsa 

To escape the threat of the Demon King, the inhabitants of another world began summoning powerful individuals from other realms. Meanwhile, Song Yi-seok—an ordinary office worker—was summoned simply because he shared his name with South Korea’s greatest martial artist. Yet, the people of this new world mistook him for the ultimate hero! Amidst an adventure built on a misunderstanding, can he manage to defeat the Demon King while keeping his ordinariness a secret?