Marietta-hime no Konrei - Chapter 20 Adlan Gets Serious!

He is the fearsome heir of an empire, wielding power throughout his life, indifferent and cold by nature, yet devoted to her wholeheartedly.“Summer Sutton, the only woman I will ever marry in this lifetime!” At the engagement party arranged by his family with another woman, he arrives with her and blatantly kicks the white lotus out of the picture.Everyone knows that Summer Sutton is the one Adrian Walyon holds dear to his heart; whatever she desires, there is nothing he cannot provide.At her mere longing for him, he flies thousands of kilometers overnight to be by her side.At her mention of missing the taste of home, he orders food to be prepared and immediately air-shipped to her.When she expresses her wish to reach for the stars, he reserves an aerial restaurant 108 floors high, making the starlight accessible.“What else do you want?” he asks earnestly, gazing at her.She tiptoes up, wrapping him in her arms, “Adrian Walyon, all I want is you!”

With a marriage contract forcefully done, he married her, and all she could do was comply, and resent him deeply for that and for all the following misunderstandings they faced, and she understood too late she loved him.

But after a life of misfortunes, she’s reborn to the very beginning, the day he told her they were married, and she was determined to cherish him in her second life!

Lin Mu Mu’s life goal is to : grow flowers and plants, and take care of Yun Ting.

Yun Ting’s life principles are : Love Lin Mumu, Love Lin Mumu, Love Lin Mumu!

- 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.

The first great emperor in the world was betrayed by his confidante and perished. Millions of years later, the great emperor’s soul returned and was reborn as Ye Yan, the son-in-law who was kicked out by the Chu family with a letter of divorce, restarting the supreme journey. Open the gate of immortality, kill the Jiuzhongtian, and cast an invincible name again!

- Description from novelbuddy