Son of the Human Race, Destroyer of Evil

Li Sheng, the chosen son of humanity, fought his way through the Immortal Realm, Demon Realm, Demon Beast Realm, Ghost Realm, God Realm, and Human Realm, killing everyone who wanted him dead. This novel has a single female lead. The protagonist isn't someone who wants to protect the world. He's simply someone who lives to protect what matters to him. He has no backing whatsoever and achieved victory entirely through his own strength and skill. There is no System, and the protagonist is not a transmigrator.