前田瑞貴

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.

The world is thrown into chaos when the public learns that in just ten days’ time, a massive meteorite will hit the Earth, likely wiping out the entire human race. This horrific news has sent a young man working in a dead-end office job named Masumi Nishina into shock. But he soon makes peace with his destiny and decides to return to his college library, where he intends to read books in a tranquil setting while he waits for the end to come. But this decision proves to be a major mistake – as it is here he is reunited with the man who ruthlessly broke his heart: Ritsu Kusakabe. But with the clock ticking and just days remaining until the world comes to an end, they start to wonder if they should perhaps reignite their romance...