Genshin Impact: God of the Isle of the Dead

(P.S. The protagonist only has Aizen Sosuke's appearance and a few of his abilities. If my writing isn't to your taste, feel free to leave. If you don't know Aizen, you can skip straight to chapter three, though I don't recommend it.) (Invincible protagonist + single heroine + the protagonist doesn't get much page time) The male lead transmigrates to the world of Genshin Impact. A hundred thousand years before the main story begins, he defeats the Heavenly Principles and creates four gods. But he loses his powers whenever he descends to the mortal realm. All he can do is follow the System's missions and build a Nether Island beside Celestia to house the dead. After sleeping for a hundred thousand years, the System finally issues a mission that will let him unlock his divine power in the mortal realm: "The Awakened Dead." By resurrecting the dead, he can change the story, truly replace the Heavenly Principles, and regain his divine power in the mortal realm. This book will make up for most of the regrets!