Under the Oak Tree (Web Novel KR) - Chapter 199

Xu Yiyang, who was only late in his life when he was middle-aged, returned to 1999 in a dream.

At the turn of the millennium and the turn of the century, he realized a truth:
Not only to be famous early, to start a business and make money, but also early!
………………
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- Description from Uukanshu

“That monster’s prefix is two hundred meters long?!”“It’s back. Who can stop it?”Isaac never planned for Celestia: The Eternal Realms to change his life. The game promised 100% immersion, a completely realistic world powered by quantum brainwave interfaces. But the moment he entered the game, Isaac was thrown into an entirely new world, no longer the player, but the played. His character, a “Lesser Hyena-Wolf,” came with the dreaded “Weak” prefix, reducing his stats by 20%.Isaac quickly realized that this wasn’t a game he could simply log out of. It was his new life, and there was no escape. To survive, he had to evolve, to fight, and ultimately, to conquer. He knew the game inside and out, but this wasn’t the same reality he’d logged into. This time, he would have to become the monster, instead of fearing it.Every step he took, Isaac grew stronger. He realized that monsters weren’t bound by the same rules that governed the players. He could evolve, gaining new powers and unlocking Monster Reputation. With every kill, every victory, he unlocked a new level of power. The prefixes that marked his growth—Normal, Strong, Especially Strong—were a testament to his evolution. And the players began to whisper.

ichiro sakutaa 16 year old High schoolstudent who is so hornythat even the boy's are afraid of him and no one tries to be close with him, and he doesn't get any sex in his world due to some acts of his and verious reasons that we will find out,but one day he gets transmigrated to another world where gender morales are reversed and women's are more sexually aggressiveas soon as he realised this he begins his journey to start hisHarem but he doesn't understand that he is letting his impulsive thoughts to do evil things and becomes a sexual perverted serial killer( his Harem will not accept eachother )( either with one of them or be dead )( rape, piss drinking, scat, loli, pedo, super pedo, femboy, cross-dressing, heavy spitting/saliva drinking fetish, heavy necrophilia sex, cannibalism sex, food sex fetish, incest, forced feminization, penetration, sexual killing, zoophilia, animal sexual abuse )mc is beyond degeneration pure evil

When not so normal man transmigrates into a novel that he didn't even remember its title, as a short-lived extra with immense potential, talent and perfect looks.If he has gotten only good stuff, he would die from joy, but nothing comes without a price. He lost most of his emotions, desires and sensation of pain.He thought it was a blessing and dreamed of just ignoring the bleak, apocalyptic future and doing what he wants without feeling an ounce of guilt. But after a few days, he understood that he would go mad because of the boredom that for some reason didn't reduce like his other emotions.Therefore he began to think about what to do about his problem.“Kill everyone to prevent apocalypse!” Though this is a good idea, why would i kill everyone because of the apocalypse? Although killing everyone would prevent the apocalypse, how the hell i will endure the boredom when all of my entertainers are killed?“Seduce and manipulate important people with his handsome looks and use them for his benefits.” Well, i can do this but it isn't enough.“Pamper his prodigy sister to make her dependent on him in the future to use her overpowered magic to find a solution to his curse.” Hmm, that's good, but this too isn't enough.Let's combine these last two.An apathetic brother who searches for a way to lift his curse while doing strange things to endure his boredom and a yandere sister who is trying to hold herself back from killing the woman/man who was seduced by her overly handsome/beautiful brother.