Please recommend a novel. The protagonist must be cold-blooded, bloodthirsty, heartless, and cruel. There must be no sissy.

For example, if a beautiful woman wants to kill you, what you have to do is not to put aside the idea of her killing you and become friends with her, but to end her with a knife. For those who pose a potential threat to you, you must cut the weeds and remove the roots. As the saying goes, if you don't cut the weeds, the spring breeze will blow and they will grow again. Don't think about what if, unless the author deliberately created it... Please provide the name of the novel. The protagonist's character must be bloodthirsty, ruthless, cold-blooded, and cruel. Others do not need the genre of the novel: online games, fantasy, Xianxia, foreign world, magic, cultivation, demon world. Only these few data are needed. Thank you for providing... Stop talking nonsense... .. .. .. .. ·Limitless Demon Sect, Star Transformation, Human Ice Artifact, Immortal Rebel, Zhu Xian, Extreme to Destruction, etc. There is no need to introduce them//////I have seen them all.