The main character, Kirihara Rei, who was living a peaceful life, came to a large department store with his family to shop.
While his younger sister, Kirihara Saki, is having fun, his parents ask him to take care of him. Rei reluctantly caring for Saki, even though she thought it was a normal thing, was boring.
However, suddenly, a foreign species that didn’t seem to exist in reality appeared. It has sturdy skin-like scales, two large wings, and a tail that can sweep everything away for a long time.
Those who appear in many of the stories were known as “dragons” and “dragons.” The ground swayed with a roar, causing a disaster.
During this time, Rei lost her younger sister, Saki, in front of her eyes, including her family.
Vowing revenge on the existence of Dragons, Rei rose to his feet and placed himself on the battlefield as a government co-operator.
A dragon disaster. –To destroy the dragon, which is said to be the cause of this.
