Aoi Kato

The human world is attacked by the space outlaw group the Dethgaliens who have chosen the Earth to be the site of their 100th Blood Game. One human and 4 anthropomorphic Zyumans awaken their instincts to become the Zyuohgers and fight to protect all living things.

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 was halted by the meteor that brought the age of the dinosaurs to an end, forcing them to flee into space. Meanwhile, the Kishiryu were placed in a deep sleep as a failsafe should the Druidon return. The chosen knights choose to live in peace while passing their mantle down across generations. In the present day, the Druidon return to reclaim Earth as the current generation of knights, the Ryusoulgers, battle them with the support of Ui Tatsui and her father Naohisa Tatsui.

High school girl Azusa is going out with her classmate Kento. He introduces his childhood friend Mariko to Azusa, and being in the same class, they become close. As Azusa and Mariko's friendship deepens, Kento begins to feel distant from Azusa.