65 million years ago, the knights of the Ryusoul Tribe were selected to participate in a war campaign against the dictating Druidon Tribe who sought to rule Earth. But the Druidon's war campaign ...

College student Megumi Yotsugi finds a mysterious woman, Kotoha Furuhashi, abandoned in a garbage dump. Hoping to befriend her, Megumi accepts Kotoha's unusual proposal: they can be lovers until ...