Theo Asper

About

Theo was abandoned by his real parents and was raised by an elderly couple. To him, that couple were his parents. The elderly couple had no children of their own, so Theo acted as if he was both, their first child and their grandchild. However, the elderly couple couldn't live long enough to see him turn into an adult.

In a world where power is the most important thing necessary to survive, and where without money one can not live, out of any options, he joins a mercenary guild. Having no experience with sword or magic, he was just holding back the mercenaries and get expelled from the parties.

After finding a book about summoning a demon to grant one wish, he summons a demon, and falls in love at first sight at her.