The stage is a mountain village where Japanese legends of the dragon are breathing. Kai, who has the unique characteristic of being “unaffected by the power of the Ryujin” in the village, meets a half-dragon Hull one day. In order to hear how to remove the “jewels” that have been assimilated to Kai, they will travel through the mountains at night, following the dragon who left the village, Hakuyo. Kai and Haru are traveling for the first time, and they are always fighting, but their feelings about the other party are really ... The first volume of a summer lyric woven by a boy and a dragon. I want to be kind ...