Tensei Shite Inaka de Slowlife wo Okuritai - Chapter 237: Night Watch

This novel is also known as Long Live the Mad Wife!

Daughter of the Feng Family, born a waste. Forced to marry a fool in an attempt to expel evil influences. When the first killer from the 21st century possessed this body, the sky and the earth surged. She was indifferent and cold-hearted but she let her guard down around him alone. She thought he was a pleasant sheep but didn’t expect him to be a gray wolf in disguise!

- Description from Novelupdates

This is the story of a young slave gladiator in an underground arena. He doesn’t know about his past or how he got to where he is, only that his name is Aegir, and that he is strong.

The Empire stands triumphant.

For twenty years the Dread Empress has ruled over the lands that were once the Kingdom of Callow, but behind the scenes of this dawning golden age threats to the crown are rising. The nobles of the Wasteland, denied the power they crave, weave their plots behind pleasant smiles. In the north the Forever King eyes the ever-expanding borders of the Empire and ponders war. The greatest danger lies to the west, where the First Prince of Procer has finally claimed her throne: her people sundered, she wonders if a crusade might not be the way to secure her reign. Yet none of this matters, for in the heart of the conquered lands the most dangerous man alive sat across an orphan girl and offered her a knife.

Her name is Catherine Foundling, and she has a plan.

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A Practical Guide to Evil is a fantasy series about a young girl named Catherine Foundling making her way through the world – though, in a departure from the norm, not on the side of the heroes. Is there such a thing as doing bad things for good reasons, or is she just rationalizing her desire for control? Good and Evil are tricky concepts, and the more power you get the blurrier the lines between them become.

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.