Void Envoy's Journey Through the Heavens

What is the meaning of life, existence, or death? Mo Shiyuan, a reluctant harbinger of nothingness, doesn't have the answers—he's just an unwilling traveler forced to save collapsing worlds. When a mysterious system drags him into Demon Slayer's universe, nothing matches his expectations: Tanjiro has turned demonic, the Demon King grows ever stronger, and twisted Pillars hunt in the shadows. In the Pirates' realm, he witnesses cosmic forces of Destruction and Preservation clash as Devil Fruits merge with the power of Destinies. Each world brings new mysteries, dangerous enemies, and impossible…