A Man with a Long Knife Decides to Save the World

The brave man who traveled through another world decided to save the world! The master will kill himself at the beginning! Is it the depravity of human nature or is it for some unknown reason? It was supposed to be a simple entrance exam, but there was a conspiracy hidden in it. "I, Marcelo Cordero, the sole heir of the Marcelo family, naturally have the obligation to shoulder the burden of saving the world." After experiencing life and death, he solved the conspiracy and saw how Cordero would flourish in another world.