SwordMage In DanMachi

Rei was an execptional person. The thing that set him apart from most people was his monsterous intellegence. He had this because he was born with the innate ability to instantly calculate/comprehend anything. One day, a god in a higher realm was working on a highly volatile project and he messed up. This was the creation god. He gave Rei the option to reincarnate with three wishes.



Thus begins the adventure of a Swordsman with a System