Level 4 Human in a Ruined World - Chapter 320

The hearse with the weird odor slowed to a stop before the entrance. The sound of pebbles could be heard bouncing on the ceiling. There were footsteps coming from the corridor, and there seemed to be someone sawing next door. The door knob to the room rattled slightly, and the faucet in the bathroom kept dripping even though it had been screwed shut. There was a rubber ball that rolled on its own underneath the bed. Wet footsteps started to surface one after another on the floor.
At 3 am, Chen Ge held a cleaver in his hand as he hid beside the room heater. The call he was trying to make was finally answered. “Landlord, is this what you meant by ‘the house can be a little crowded at night’‽”

- Description from Novelupdates

Qiao Yanzhou is a video gaming streamer.

Gu Zixing is a professional gamer.

Qiao Yanzhou is a big fan of Gu Zixing.

Gu Zixing is Qiao Yanzhou’s idol.

Qiao Yanzhou is a quiet fan.

Gu Zixing is a cool and charming man.

Qiao Yanzhou is a couch potato.

Gu Zixing is a world champion.

A ranked game brought the two together, and the chemistry between them takes an unexpected turn…..

Not long after:

Gu Zixing: Xiao-Qiao, am I still your idol?

Qiao Yanzhou: Yeah.

Gu Zixing: Can I kiss you then?

Qiao Yanzhou: Sorry, who did you say you were?

- Description from Novelupdates

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.