The supporting character's harem is very normal - Chapter 324 Royal Succubus

A young man, killed because of his sister's identity as a Psychic, was reborn into a parallel universe's version of himself and began a new life.The growth path of a true villain boss. In the past life, he was ordinary and powerless to resist, but in this life, he awaits the moment to turn the tables

Qin Xi crossed the prehistoric times, just in time for the first robbery of the Dragon and Han Dynasty!

In this era when the great Luo Jinxian is everywhere, he doesn’t know his own footsteps, so he chooses to live in seclusion and enjoy a leisurely life.

[Ding, welcome the new member ‘Honghuang Boss’ to join the dimensional chat skirt! 】

Wanhua Tongling: “What is the big boss in Honghuang, can you eat it?”

The unreliable god of ninja: “The new boss enters the skirt, the status of the skirt is reduced by one, and the front row asks…”

A girl who is always seventeen years old: “In the world of Honghuang, the newcomer is a super boss, get ready to hug your thighs in advance.”

Honghuang boss: “Well, I’m really not a Honghuang boss! Wait, my Jade Rabbit just caught a wild dragon girl and went into hiding for the time being.”

- Description from novelbuddy

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.