In JJK With Naruto Powers - Chapter 9: First Member of the Akatsuki

Alex was just trying to escape his dead-end job and overbearing family. Then the System arrived, bringing with it magic, Rifts, and the chance for ordinary people to become extraordinary. Unfortunately for Alex, his stats started out as unimpressive as his old life. But when he gains the unique trait {Primordial Will}, which only allows him to put his free points into one stat, everything changes—though not necessarily for the better.Thrown into a dangerous Rift way above his pay grade, Alex quickly discovers that surviving the chaos isn't just about having powerful skills. He'll need every ounce of his Willpower and resourcefulness if he wants to make it out alive and bring home the rewards that could finally give him an edge.This series follows Alex as he begins to master the art of Mana Threads and creates a revolutionary new magic system with Spell Circles. He starts to realize that magic isn’t just a tool—it’s a path to power that few can fully grasp. But with the world’s governments struggling to contain the rising number of superhuman threats, Alex will have to navigate more than just monsters and Rifts. In a world where “might makes right,” who really calls the shots?

One will to create oceans. One will to summon the mulberry fields.

One will to slaughter countless devils. One will to eradicate innumerable immortals.

Only my will… is eternal.

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.