Seirei Tsukai no Blade Dance - Volume 10, Chapter 9 - The Awakening of the Demon King

What’s not to love about my new life after transmigrating into a Pet-centered world?
There are mighty creatures that come in all shapes and sizes. They can either be cuddly companions, helpers in your daily life, daring scouts or strong fighters. Or all of the above. Not bad, huh?

I have a family, but the fact is completely overshadowed by my younger sister. She thoroughly hates my guts, and she makes sure that I know this. Every. Single. Day.
Did I mention that she’s disgustingly talented while I am a bottom feeder? A terribly handsome one at that.

I have free rein to run the family business on my own. A small and quaint Pet Store. It should have been great if not for the fact that the previous owner of this body was born with ZERO affinity to handle Astral Pets…

It wouldn’t be a proper transmigration without a gimmick or a system to pave my road to greatness, don’t you think? I have one, but I don’t know if I would be better off without it…

Living things really are ignorant – the greed to obtain the key to knowledge and the fundamentals of energy overpowers them. Little do they know that knowledge is full of lies and energy is the root of destruction. Us, mages, have mastered travelling through space and time. We are invincible, we can turn worlds into dust and you, mere ants, will be wiped out with no trace.

-Mage Adam

An A.I.(Artificial Intelligence) gets reincarnated into a world where he becomes a mage.

After 10,000 years, it was iced. The Douro’s federal expedition team discovered an egg with a gold and silver two-color pattern during the scientific study in the northern part of the country. After exploring it with an instrument, it found that there were vital signs inside, and he quickly brought it back to the institute for incubation. The egg hatched, but it was a baby, a baby identical to humans, and an egg-born child.

- Description from ptwxz

Andrew traveled across the magic continent. With a low talent, he unlocked the Witch Cultivation system.

After completing the task of unlocking the witch, he could upgrade and obtain the element ability of the witch.

You gained 100 points of experience from the Fire Spirit witch, Evelyn's fondness for you +10 points, and unlocked the fire element 10 fold attack.

You gained 100 points of experience from the witch of the storm, Taylor's fondness for you +10 points and unlock the windstorm tornado.

The witches were not only beautiful but also sexy and charming. Each of them could destroy the world.

As their host, Andrew was busy making love with them every day.

Andrew had become a unique existence in mage. When others were still diligent in their study, he had become a big tutor mage that everyone admired through breeding witches.

When he became the public enemy of the aristocrats on the continent, all the witches destroyed a country, and he became the supreme god of the world of magic!