Itai no wa Iya nanode Bōgyo-Ryoku ni Kyokufuri Shitai to Omoimasu - Chapter 395

Overnight, Tangning became a big slave owner in the southern United States with three large plantations and hundreds of black slaves who could be driven at will.

Tangning was very satisfied with the result of such a time-travel, but then he sadly discovered that he could only enjoy three years of such a good life, because three years later would be the “Civil War”, what should he do after this?

- Description from novelbuddy

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!
………………
New book uploads, new stories, new voyages,
Hope you all support!

- Description from Uukanshu

The story is about a a hitman, Who dies because of his own recklessness and transmigrates into a game he used to play after his retirement as a hitman.I'm not gonna spoil any further, but i might answer few of your questions.Is MC overpowered?Nope, he'll become strong over time and all battle he'll fight will be because of his effort and techniques.Is there magic and adventure?Yes! It have both magic like normal isekai with adventure and fighting with monsters and many other things. There are other important things like “Essence Stone” But let's talk about it in the chapters.There will be harem?Not really, He will be in contact with many beautiful female and males but one waifu but i haven't decided yet.All i can say is, give it a try, I'll try my best to make it worth your time.

[CAUTION][+18 MATURE NOVEL][STRONG SEXUAL CONTENT]Leonardo is bullied by everyone in his class, boys and girls alike.Everyone knows he’s obsessed with MILFs, and they torment him for it.No one lifts a finger to help him.One day, a message appears:[Congratulations, Leonardo, you’ve been selected to participate in a System.]What?[You have 1 minute to make a decision regarding the NTR Demon System.][Your participation depends on your approval.][If you accept, you will gain special abilities to subdue your enemies and humiliate them publicly.][Your life will never be the same.]Leonardo accepts and embarks on a revenge journey fueled by NTR.Now that he has the System, none of those who made him suffer will be left untouched.