Dungeon of Niflheim - Chapter 28

In the blood-soaked world of Magus , Aizen, a young man from Earth, finds himself thrust into a brutal reality where Sorcery reigns supreme. Once a lowly servant, despised and humiliated, Aizen hid his true intentions beneath a mask of submission. With each insult endured and every drop of blood spilled, he sharpened his resolve, guided by the mysterious Wisdom System.

Lucius Lothra, a passionate gamer suddenly find not just himself but the whole world in a fantasy world where Knights and Mages exist.All Earthlings who once played a VR Game called System Online wake up in this world with their own Systems which they created when playing System Online. Lucius had just created an account when a world ending event occurred so he didn't play the game but he did manage to create his own system.The only problem that Lucius has is that he doesn't know if his system works or not and the only way to find out is... DEATH!!!

After Reincarnating into Naruto World at the Warring State Era as an Uzumaki, Masahiko thought that he got a useless System. He lived for 48 years as a normal, below average Uzumaki Shinobi.

That changed when he finally knew how the system works the day of his 49th Birthday!

- Description from Novelupdates

[ R18/Smut/Harem/Netori ]------[ DING ][ Ultimate Spin System Activated ]---It all started with a mysterious notification. Lucas Cross, an ordinary gamer struggling to make ends meet, suddenly found his life turned upside down. When the Ultimate Spin System chose him as its host, he was thrust into a chaotic world filled with random rewards, bizarre challenges, and unpredictable skills.From gaining passive abilities that attract unfaithful wives to spinning weekly wheels of fortune with life-altering consequences, Lucas must navigate a world where the line between game and reality blurs.