There Are Many Brave Men, but Few Devils

In this continent that was once shrouded in the legend of "the brave man slaying the demon king", a subversive "imbalance of supply and demand" is taking place - as the "brave awakening ceremony" of the Holy Holy See becomes more and more frequent, the number of brave men with the dream of "saving the world" has increased sharply, exceeding 100,000 in just ten years; in contrast, the demon king, who symbolizes evil and chaos, has become the "scarce resource" on the continent due to the withering of his bloodline and the strengthening of the seal. Finding and killing the Demon King has become the most urgent goal for the brave men to prove themselves. At the same time, a Demon King who once destroyed the world came to this world by chance, and a girl who can read memories became his partner. The secret has been known, how should his story be written?