The Most Satisfied Reincarnate

After years of committing atrocities, our protagonist grows weary of his violent ways. He attempts to live a normal life, but fate has other plans. He dies and is given a second chance at life in a new world - one where magic reigns and a powerful Wizard holds the fate of all in his grasp. This new world is inhabited by a variety of races, including Demons, who possess immense physical strength, and Elves, who excel in magic. Even the most mundane beasts have evolved to master magical abilities. But our protagonist is reincarnated as a human - the weakest and most fragile of all the races. Can he survive in this chaotic world, where danger lurks around every corner, by relying solely on his past experiences? "To survive in this world, I will do whatever it takes, even if it means wiping out an entire race."