Don’t Concern Yourself With That Book - Chapter 320

In ancient times, there were seven types of evil thoughts, each of which possessed the power to confuse, and muddle, people’s hearts. Every single person that came into contact with one of the seven, would inevitably undergo a sudden change in personality and temperament, and commit the unforgivable crime of murder.

Determined to rid the world of these seven evil thoughts, Lao Zi forced the seven evil thoughts into seven separate bamboo strips and secured the opening of such bamboo strips with the Phoenix Lock, and, in so doing, finally succeeded in sealing the evil bamboo strips.

But who would have thought, that the evil bamboo strips would, in due course, reappear on the surface of the Earth……

- Description from Novelupdates

Jiang Xichu was Chen Man’s secretary for many years. There was an inevitable dispute in the workplace. On this day, she just had a big fight with Chen Man. Before she passed away, she was stabbed to death by a psychopath who retaliated against society. Not long after her death, Jiang Xichu learned from the civil servants of the underworld that Chen Man didn’t feel guilty and had embezzled her well-deserved salary. Even her funeral was held casually, her colleagues weren’t able to attend and give their condolences. She goes back into the world full of anger and was ready to frighten the heartless woman, Chen Man. When she arrived at Chen Man’s bedroom, she saw Chen Man held an urn full of her ashes, while slowly looking at her pictures when she was alive while looking haggard.

A year later, Chen Man also died. The cause of death: suicide caused by severe depression. Jiang Xichu left Chen Man’s home with a complicated mood. She wanted to go back to the underworld and ask Chen Man about it. However, after stepping out of the home, she was reborn again.

Once again in the world, general manager Chen made her breathless.

Jiang Xichu: …

You little actress girl, you play your two faces very smoothly!

- Description from Novelupdates

When 18-year-old Kyle Conner arrives at his aunt's for a summer holiday, he expects relaxation and freedom. Instead, his life is forever altered when he crosses paths with Lilith, the demon of lust and second-most powerful entity in the underworld.Forced into a dark pact, Kyle is transformed into a demon and gifted with a mysterious system that promises immense power. But this newfound strength comes with a deadly price: Kyle must hide his true nature and navigate the treacherous world of demons, all while being hunted by Lucifer and other malevolent forces.As Kyle struggles to control his newfound powers and unravel the secrets of the system, he discovers his ultimate goal: to overthrow Lucifer and bring about a new era of peace. But with the forces of darkness closing in, Kyle must confront the darkness within himself and make impossible choices to survive.Will Kyle be able to master his demonic powers, outwit his enemies, and fulfill his destiny? Or will the weight of his newfound responsibilities consume him, dooming humanity to eternal darkness?

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.