The Secret of Cause and Effect

In thousands of worlds, there are all living beings, some are cultivating Taoism, some are cultivating demons, some are cultivating Buddhism, and some even fall into evil ways just to gain a chance of immortality, step into the realm of eternal life, and become the only immortal existence. Xiao Ming is a different person. He goes up to the fairy world, explores the Nine Netherworlds, and transcends the reincarnation of the world. All he wants is the original sentence: "How long can I love you? Well... I will only love you forever."