Is It Possible That I Want to Be a Good Person?

[The end of the wasteland + superpowers + villains + no system (to be precise, a non-system novel) + the protagonist is immortal + multiple heroines + ■■■] 70 years ago, the old era collapsed due to disaster. 70 Years later, the new era is dancing with disaster. This is a wilderness wasteland, and the Spark Domain is one of the only remaining civilized worlds in the wasteland. At this moment, Feng Xun, as the most ordinary college student in the Spark Territory, suddenly experienced a qualitative change in his life. And all of this starts with him obtaining the memory of his future self. In the future, he will be a villain who has completely fallen into madness because he cannot stand this fucked-up world. He is a walking humanoid natural disaster. By the way, what was acquired along with the memory was Future Fengxun's perverted divine speech ability (that was a divine word, a divine superpower). He has three abilities: "no one else can kill him", "playing with the body of dead humans", and "yours, mine and everyone". As a result, Feng Xun, who used his second-hand divine speech ability, finally became a legend in this wasteland reluctantly, confused and speechless, and became a peerless madman and villain (meiyou, bushi). No, is it possible? I want to be a good person and I don't want to make the same mistakes again! … Oops~ One more thing, the protagonist's surname is Feng and his first name is Xun. He is Feng Xun, not Feng Gou, and he is not a mad dog!