Dxd: A demon Among Devils - Chapter 30: []:Rias

A naturally timid engineering student found himself transported to France before the grand revolution, only to become the older brother of the future Emperor Napoleon for some inexplicable reason. Now, he faced a crucial decision: would he seize this opportunity to create his own remarkable destiny or merely cling to this lifeline and drift along?

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy

Yun Yuwan carelessly lost Wen Yangzhi's letter, but the foreign butler assured her with certainty, “That was a love letter.”She had been secretly in love with Wen Yangzhi for many years, and upon learning it was a love letter, she returned home overnight.Clutching the hope that he also liked her, she began to respond.At the dinner table, he said, “Come sit here”She ended up sitting on his lap, dressed in suit pants.When he renovated his newly bought villa, she playfully said she didn't like the crystal chandeliers.Some time later, his assistant told her:The letter Wen Yangzhi had sent was not a love letter at all, but a nine-figure check, intended as a birthday gift.The assistant laughed distantly, “Director Wen can't even be bothered to buy gifts, how could you think he liked you, Miss Yun?”—Long afterward, when Yun Yuwan brought up the incident with shame,Wen Yangzhi didn't reply, he just sparked his lighter, a tiny flame dancing on his handsome face, appearing indifferent and aloof.He never said it wasn't a love letter,Not all love letters contain sweet nothings,At least Wen Yangzhi's didn't.He wouldn't do something so cheap and insincere.Knowing that the men who approached her were after her money.He simply wanted to tell her.Her bit of money, he didn't care for it.—A nine-figure check expires in ten days, I've waited for you for ten years, undying affection still clouds my senses.—Self-loving, beautiful heroine x man whose bark is harder than his biteIndependent brand florist x pioneering bankerTheme: Adults don't deal in pretense

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.