The King of Faries is now a Demon Lord - Chapter 25: Auction

When Zhou Shu woke up, he learned that he had become a Forging Apprentice at a workshop in the Forging Division of the Great Xia empire.

There’s an ancient saying in Great Ruins, ‘Don’t go outside when it’s dark.’

In Great Ruins, the disabled elders of Disabled Elderly Village picked up an infant by the riverside and named him Qin Mu, raising him up with blood and sweat. This day, as the night descended and the darkness shrouded Great Ruins, Qin Mu left home…

Become a villain undulating in the spring breeze!

That’s what Blind told him.

This is the rise of Qin Mu’s road to becoming a villain!

- Description from novelupdates

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.

A Hentai World is a Dangerous Place, Especially if Your Best Friend is a Hentai Protagonist and You Are a Trap.