Re-Birth Of A Genius. Creator/Destroyer - Chapter 27

After the last elemental high tide ended, the world entered the “Great Ebb Tide Era”, and countless races such as elves, giants, orcs disappeared in the long river of history. However, the continuation of life has its own way. After a long time of accumulation, the blood of ancient alien races gradually merged into human beings.

You have the blood of a giant, become my warrior, and I will let you look down on the common people again;

You have elven blood, join me, and I will let you feel the call of the moon god;

You have the blood of an ancient dragon, show your surrender to me, and I will make you the apex of the gods!

I am the blood lord, I have the ability to awaken the power of blood, my name is Robin.

This is a system, lord, war article, I hope you like it

- Description from novelbuddy

In the realms above, supernatural beings of unfathomable magnificence exist, far beyond mortal comprehension. These divinities wield unimaginable power, capable of obliterating worlds with a mere breath.However, what unfolds when these gods meet their demise?Set in a remote corner of the vast universe, long after the apocalyptic Thousand Millennium War of the Heavenly Beasts and Deities, this tale delves into a forgotten world. Here, the ashes of fallen gods descend upon an insignificant pebble, adrift amidst the cosmic tapestry of space and time.Their impact alters the life of a proud young man, who embraces the abrupt changes thrust upon his world. Refusing to yield to the clutches of fate and karma, he dares to defy the heavens themselves.Will he triumph over an insurmountable destiny, or succumb to fate like gods of unimaginable might did before him?The dreams of a deceased deity and the fate of a dying world hang precariously, hinged upon the future of this young man. He treads upon an endless bridge, forged from the corpses of the fallen.Unlock this epic saga of death, sorrow, war, blood, love, vengeance, and triumph with your own eyes.

“How can it be!”

Tang San looked at the unscathed Lu Yuan in shock, and subconsciously said what was in his heart.

“Nothing is impossible.”

Lu Yuan stood there calmly.

If a spatial ability user can’t dodge the most basic physical attack on the spot, he might as well dig a hole and bury himself.

- Description from novelbuddy

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.