Becoming a God at Level 100, Starting from Hunter x Hunter - Chapter 44

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.

Takashi Nakamura is an ordinary student, constantly targeted by bullying from his classmates, living a life marked by loneliness and disdain. When he and his peers are mysteriously summoned to a new world, their hopes for change quickly fade. Deceived by everyone, he is accused of crimes he didn’t commit and executed by his classmates who planned everything from the start.Reborn as Pandora Aegis Oblivion, the new Demon King, Takashi no longer cares about the consequences of his actions. With immense powers at his disposal, he embarks on a journey of chaos and destruction, determined to plunge not just the kingdom, but the entire world into absolute chaos.In a universe filled with shadows and magic, Pandora transforms into an unstoppable force, a symbol of despair and power. As she progresses, she confronts relentless enemies and the reality of her new role. In her quest for total destruction, she will discover that every act of revenge comes at a cost, and that even amidst chaos, echoes of the past can resurface, challenging her resolve.

In the age of the Warring States, the world is at war!

At this moment, a great empire is about to be established, and at this moment, this empire is at stake.

In this vast world, Young Master Qin shouted loudly, “I want this great Qin Wanshi–!”

- Description from novelbuddy

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.

A poor little kid walks out from a remote mountain area while holding the Nine Dragons and the Incredible Cauldron. With a control over the time and space eternally, he embarks on the Path to God where he defies the odds of the boundless universe gaudily by fighting against royalty and clashing with the legendary generation.

- Description from Novelupdates