Toaru Majutsu no Index - Volume 3, Afterword

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.

In the vast forests, towering mountains, and the wide seas, mythical creatures spread across the wide world. Some are large and terrifying, while others are small and gentle; half of them enjoy harming humans, while others wish to help them.No one knows exactly when they appeared. Some say they existed before the human race emerged, while others claim they appeared alongside the first humans in this world.Their forms and abilities vary, and different races deal with them differently. Some despise them and consider them monsters, while others revere them. Yet everyone agrees on one thing: it is best not to attempt to meddle with them.Everyone, that is, except for one person.