Summary: Kenshi Masaki is the half brother of Tenchi Masaki and used to live in Japan, that is until he was summoned to the land of Geminar. The Land of Geminar has been witness to an endless amount of wars that have been fought using Seikijin, bio-mechanical weapons controlled by a capable warrior called a Seikishi using magic power called Ahou. It is revealed that Kenshi is an amazing Seikishi and it seems someone has a reason for Kenshi to be in Geminar, but who and why are not known. Ok the summary doesnt sound as good as possible because the first sentence is basically not shown at all so ill try and make my own summary. Kenshi Masaki is summoned to the land of Geminar and after being found out as a rare male Seikishi (Giant Mechanical Suit Drivers like 99% are female, males cant handle the stress of Ahou apparantly) he is used to launch an assassination on the newly crowned princess/ruler (of a country not the world) Lashara in exchange for a way back home.