Fate/World - Chapter 117

Among the demons, the supreme ones are called “Great Saints.”

A young man leaves his mountain village and travels around the world. By unceasing efforts, he finally becomes a legend of the age.

- Description from Novelupdates

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

[Warning: Mature Content, R18, Contemporary-Fantasy setting]Evanescence “Evan” Holz, a billionaire businessman, received a souvenir from an obscure country that creates s*x dolls called “Eternity Women.” These “Eternity Woman” are life-like and turn alive once activated. To activate them, you need to “use” them.There's only one way for anyone to use a doll: You “play” with them.But what if these Eternity Women weren't just s*x dolls that magically come alive? What exactly is the mechanism behind Eternity Women that makes them into sentient beings in the first place? Is it just the pleasure, or there's something else, something sinister, that gives them life?That’s for Evan to find out.***EXCERPT:“Raise your hips,” he ordered. His voice was husky and demanding.Eternity quickly did as she was told to do. He wasn't a mind reader, yet he knew that it filled her with desire that he was talking to her in such an authoritative manner.Evan slipped Eternity's panties quickly off of her, giving them the same treatment as her bra once they were removed. He flung them away with no care as to where they would land. He nudged her legs wider apart using his, signaling the impending act.As Eternity called it, 'penetrative intercourse.'“May I?” he asked, even though he knew how much she wanted it.She nodded, tears trailing down her cheeks because of how much she had done.“F*ck me, Evan.”

This is my first original novel, it may be bad, but this is all in my mind and imagination. (Warning!! There will be an Incest genre) Thank you o⁠(⁠(⁠*⁠^⁠▽⁠^⁠*⁠)⁠)⁠o(oh yeah I forgot, this cover is not mine, I just edited it, if you feel you own it and don't like me using it, please tell me)