About Me Training Heroes Just to Kill Me

In 7891, the world collapsed and evil was rampant. In order to save this world, I killed all the brave men, lost everything, and finally became the devil of this world. In order to maintain the fundamental balance and order of this world, I have sent down ten kinds of darkness - human beings will develop hatred, malice, anger, struggle, fear, sadness, killing, despair, and destruction, constantly reincarnating in endless pain. Without anyone expecting or understanding me, I protected the world and maintained the stability of this world's time and space. But the people I loved left me one after another, and I lost the meaning of living, but I couldn't die. Randomly every two or three years, brave men will come to attack me, but they are too weak. So, I finally came up with a bold and novel idea