The Demon King Overrun by Heroes
마왕인데 용사가 너무 많음 / Too Many Heroes for the Demon Lord / I'm the Demon King, but There Are Too Many Heroes / The Demon King Has Too Many Heroes / Too Many Heroes for the Demon Lord / Too Many Heroesfor the Demon Lord
Ongoing

Berge, a Demon King, discovers that the textbook he followed faithfully has made his tower a hunting ground designed for heroes—and he is killed by them. After regressing and gaining a second chance at life, he rejects the book’s teachings and sets out to survive on his own terms. This is the survival story of Berge, a screwball Demon King facing an overwhelming number of heroes.}