Douluo Dalu 2: The True God King - Chapter 348: [DD2]:

Yun Lintian, a man from modern Earth, found himself in a cliche situation that was all too familiar to him in novels: Being transmigrated! He had arrived in a magical cultivation-oriented world called the Azure World.

Unlike the other protagonists in various novels he had read before, Yun Lintian was left without any cheat device. Pill Emperor inheritance? Super God-like physique? He had nothing!

Did the God of Transmigration really leave him with nothing? How was he going to live in the world that strong preying on the weak?

Watch the journey of Yun Lintian in the foreign world as he grew up in power ranking along with his precious all-female sect!

Luo Qiu became the boss of a ‘club’ by chance.

It was a weird club that sold strange items and with a servant girl that had 300 years of working experience. Countless people with dreams, hopes and ambitions came to the club to exchange anything precious they own for what they want. They would offer their lifespan, items, and even their soul. Every successful trade would increase Luo Qiu’s lifespan by a little.

“Tribute successful, your lifespan has increased by 99 years.”

As thus, Luo Qiu began his endless life as the club’s boss.

- Description from Novelupdates

Shangjing Hospital’s intern, Xiao Yifei, stumbled upon some scandalous behavior from the chief doctor and subsequently faced the hostility of the chief, making his work life extremely difficult. Little did he know that shortly after, Xiao Yifei would inherit the legacy of the Jade Dragon Eye. X-ray vision, control, all within my sight. Lolis, beautiful women, all within my embrace. From then on, Xiao Yifei embarked on a life that was nothing short of spectacular!

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.