The Veteran Healer Is Overpowered

A brief description of the manhwa The Veteran Healer Is Overpowered:

South Korea’s top hunter, the ‘Mad Dog’ Min Siwoo.
The moment he and his disciples defeated the Demon King, he was sent to another world.
After a hundred years of battle in a monster-filled realm, he has finally returned to Earth! “But why has everyone forgotten about me?” A hundred years in the other world was only ten years on Earth.
Having become an ultimate veteran through a century of bloodshed, Min Siwoo sets out to find his lost disciples and uncover the reason behind his forgotten existence! [Food, buy me some chicken.]
…Alongside Pre, a mysterious being he encountered in the other world! Show more