Demon Boss in the Human World - Chapter 4

A serious accident caused the protagonist’s brain to have an unusual mutation. This changed the brain development that it opened the door to a mysterious universe. Not only he obtained a ‘god-like’ powerful telekinetic control and mental perception, he also had an abnormal analysis and memory capability comparable to super computer. Having such super brain, his rough life began.

Brain development progress 10%…….20%……50%….80%…. …100%

- Description from Novelupdates

I claimed to be better than the MC. An Eldritch entity decided to put my claim to the test and reincarnated me into the world of the novel I read. But, I’m not alone. There are five other reincarnates?

Wait, wait, wait! Why is the MC a regressor now? That wasn’t part of the script!

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Regaining the memories of his previous life, Cyril realised that he was an otome game’s character, the villainous daughter– Sophia’s butler.At the rate things were going, Sophia would eventually have the prince stolen away from her by the heroine, fall into darkness, and be executed.Wanting to save the villainous daughter he was so fond of, Cyril moved to eliminate all the factors that would cause her to fall into darkness, raising her up to be a talented and beautiful girl who could win the prince’s love, however…

Ophelia von Aubessec, an Empress ruling over millions gets slain.Regressing back to her body 300 years ago, she sets her sights on getting revenge on the forces who had managed to kill her.By using her knowledge of the future, she builds her own Empire, wins back the lovers she lost, and discovers the secrets of the system she had been provided.---------This is a dark novel and IT IS HAREM. However, it may travel more into a polygamous relationship due to the complications of a harem.There are also R18 scenes sprinkled about, so please read responsibly.