MTL - The Great Era of Rebirth: 1993 - Chapter 828 , Incident: Du Shuangling called Mi Jian (beg the moon

A goddess of another world who called herself Goddess Liliel gave a unique skill [Creation Magic] to the nameless protagonist who is going to be reincarnated into another world.

Although she had knowledge of Japan in her previous life, she couldn’t remember the specifics—-the girl who decided to call herself Chise, invented the [Seed of Magic] in order to increase her mana, and continued creating them with her increased mana.

The girl who obtained massive amounts of mana stopped aging, and eventually obtained perpetual youth.

The forever young loli cheat creation witch Chise brought her companion Tet, her golem daughter who can’t grow old, to become an adventurer, and traveled around various places in a different world with the safe land as a base that she personally created.

Waking up again in his seventh reincarnation, prince Jing Beiyuan found himself back in time, when everything had yet to be set in motion. Having been given a second chance, Beiyuan had to survive court and decide whether it was finally time for him to let go of his feelings; all while trying to handle the youthful, innocent force of nature who had suddenly barged into his already complicated life.

- Description from Novelupdates

In history, the most notorious Holy Knight! Corrupt Light! Holy Sinner! Blasphemer! The Irreverent! Wright has many well-known titles within the Church of the Holy Light.Angel: “The Goddess tells us to guard against fire, theft, and Wright!”Evil God: “Could you stop targeting me alone when you fleece us?”Evil Dragon: “He not only extorted my money but also abducted my precious daughter!”Devil: “Hell is still too kind and pure for Wright to handle!”Yet this man, whom the Goddess of Holy Light considers a thorn in her side, has become the world's most terrifyingly powerful Holy Knight!!Wright: “Do you believe in the light?”

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.