What is considered the scariest horror story ever written?

The King of Sin has returned.~ 18+

"What are you here for?" "I just want to get scared..." Ye Delun is to put it simply, a horror addict. He strives to find something terrible enough to make him jump or scream. But after years of his strange unsatisfied addiction, he's forced into a last resort. Playing a game his friend recommended. A horror-based otome game. After getting over the fact that he's playing as a woman, and several men are chasing him, Ye Delun forces his playable character into terrifying situations in hope of finding some stimulation. But all he's left with is an obsessed husband every time and a supposed happy ending. Ye Delun wanted to give it another go, when an anonymous message arrived in his game mail. [Are you lonely and in need of a lover? Have you been falling asleep at night dreaming of fictional characters? Knowing good and well that they're not there? If you want that to change, then join us here at 'OtomeHorror'! Where we make fictional dreams come true and close single lives to an end!] And without a second thought, the horror entranced Ye Delun accepted. Tentacle Monster: "Fear me, mortals! For I am your living nightmare!" Ye Delun: "..." That's not scary at all, but he does look like dried squid... Tentacle Monster: "Hey... wait, why are looking at me like that?" Ghost: "You dare think you can live in my house? Over my dead body!" Ye Delun: "Ah.... but you are dead." Ghost: "Now's not the time!"

A program was held by God and his agents, involving isekai and he found a specific creature interesting.... As such his luck on other worlds are non-existent and instead the worlds he's given are by God's choice. Took inspiration from Prototype: Apex Predator also new to writing so please give constructive criticism since I may create some mistakes or plot holes.

Those who are scared easily, should not read this series of short horror stories. Each chapter is the beginning of a new story.

Synopsis This is the story of a young man who travels to various universes to enjoy a peaceful life. He is a narcissist. He is a person who loves to show off and really didn't like to be lowkey or hide his strength, he really was a straightforward person. Some of the worlds he would visit: First world : Against the Gods Second World : One Piece Third World : Naruto Fourth World : Cultivation worlds ( BTTH, Soul Land, Martial Peak, Apotheosis, Rebirh of the Urban Immortal Cultivator, etc) English is not my main language, I am writing this to improve my English. So please forgive me if the grammar is really bad.

But what exactly is peace ? A reality ? A dream ? A utopia led by the greatest leaders of this world ? Thus giving the people the illusion that all is well ? Or is that the definition of the word 'rest' before the next war ? Because as the saying goes 'Who wants peace, prepare for war'. The Rikudô Sennin offers the chance to Sakura Haruno to answer it.