The Villainous Daughter's Butler ~I Raised Her to be Very Cute~ - Chapter 37Book 2: : Side story: ... of Light and Darkness spreading throughout the royal city Part 1

When I cleared the final chapter of a game that was a national failure, I became an unnamed side character in it.

A non-standard, unmeasurable, EX rank supporting character.

“Send me to the past.” That’s how the first step toward revenge began.

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.

Mason was a mercenary, until the day he died on a mission after being betrayed by his unit.