The Warden of The Witches - Chapter 278:

When Li Xianyu was 20 years old, he received his father’s inheritance, an 18-year-old great-grandmother who was incredibly beautiful.

Li Xianyu: “Great-Grandma, why are you so young?”

Great-Grandma: “That’s because I died when I was 18 years old.”

- Description from Novelupdates

Lucius was a man born to a pair of lowly servants that worked for the Great Demon worshiping Barrom clan. Growing up in the harsh conditions of the Barrom clan where magic and power reigned supreme, he weathered though humiliation and schemes. Knowing that he wanted to be the oppressor than the oppressed, he began his conquest. Not averse to betraying or scheming, Lucius made use of his allies as mere pawns to be sacrificed.

Learning that a powerful artifact lost eons ago was hidden in an ancient ruin, Lucius betrayed and sacrificed one of his closest people, his lover without hesitation.

But he didn’t know that fate had a different plan for him and the artifact he had yearned for would send his soul hurtling across the cosmos, forcing it into the broken body of a young man called Asher Inanis. Coming to his senses he finds the world to be completely different where the magic of his previous world did not exist, but what did was ‘Gifts’.

Witness how he learns about the world, gains power and reigns supreme against all odds becoming the Demonic Sage.

Ye Yuwei, a natural-born adorable girl.Driven by her dream of becoming an idol, she joins the 'Galaxy Girl Group,' only to discover that her teammates are far from pure-hearted white lotus flowers, innocent little rabbits, or simple-minded beings with no cunning intentions.Most of her teammates are scheming and cold-blooded, with a beautiful exterior masking their venomous hearts—they're masters of manipulation and experts in internal disputes.Under fierce competition,Ye Yuwei is ultimately framed by her teammates and ends up shelved by the company.She thought her idol career had come to an end.But unexpectedly, the company decided to repurpose her under the principle of making use of 'waste' by sending her to participate in a talent show.Amid widespread criticism, she rises to fame as a top national idol and experiences her first romance in life—the hot-blooded and passionate love of Long Zitao, the president of Dragon Entertainment.You think this marks the beginning of a perfect life?No, following her rise to fame, she not only has to endure exploitation by the company and deal with bizarre fans but also face challenges from various major figures, unspoken rules, and her ulterior-motive-filled former teammates…

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.