Saijaku Muhai no Bahamut

Lux is a former prince of an empire called Arcadia, that was overthrown in a rebellion five years earlier. Lux accidentally stumbles into the bathing area of a female dormitory, sees the princess of the New Kingdom, Lisesharte, naked, and incurs her wrath.

Lisesharte then challenges Lux to a Drag-Ride duel. Drag-Rides are ancient armoured mechanical weapons, Machine Dragons, that have b...