Well, let's see...First humanity discovered magic, sometime in the early 2000's. Magic led to creating Gears. The Holy War started in 2074, when Gears annihilated Japan in a rebellion under the Gear "Justice". Testament worked for the Holy Order, who fought Gears efficiently. At some point he became a Gear, but his will was usurped by Justice. Justice used him to fight for Gears against humanity. The war ended around 2174, Testament disappeared for awhile. I hear he tried to start some trouble with a tournament, according to May.

Anyway, I met him months later, taking care of Dizzy. Eventually I managed to get him to agree to letting me care for Dizzy and give her a real life with socialization.

Since then he's refused to leave the Demon's Forest, but we visit occasionally. Then one day we all ended up here.