My Succubus System - Chapter 218:

Everyone wants superpowers, including Alden Thorn.But even if he's lucky enough to be one of the few humans granted magical abilities by the extraterrestrial System that's been running things on Earth for decades, his goal of being a battlefield support hero is still a long way off.He's got determination on his side and maybe a murderous alien desk clerk, too.The universe is a complicated place. Alden's about to meet it.

Shao Di Yu, an orphan, is adopted as a result of of a murder case involving the deaths of his entire family. Because of some painful experiences, he refuses to speak. However, he has sharp insight; moreover, he becomes under the care of a pair of twin brothers in the police force, who also have a child currently in university. Yu Yin possesses yin-yang eyes, which allow him to see things ordinary people cannot. The two brothers happen to complement each other, and together they investigate various inconceivable incidents.

“Is this a game or reality?” - Michael Norman*****Apocalypse descended, and reality transformed into a game for a select few known as Awakeners.Between the ages of 16 and 18, every teenager had the chance to awaken a class and attain supernatural powers. Awakeners would then venture into a game-like world, the Land of Origin, seeking treasures and gaining tremendous strength.Michael transmigrated into this world at 18 and successfully awakened the Necromancer class. However, that was not all—Michael also unlocked a unique talent that allowed his undead summons to evolve infinitely......[Little Skeleton has successfully evolved into Skeleton Soldier!][Skeleton Mage has successfully evolved into Skeleton Summoner!][Bone Dragon has successfully evolved into Undead Frost Dragon!]......With his powerful undead summons, Michael set out on a path to become a supreme legend.Tags:#Necromancer#Undead#Evolution#Armybuilding

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.