Based on the legend of Ikkaku, which is a tale about a Buddhist monk who had allowed himself to be consumed by pride. He imprisoned all the dragons he could find throughout the land and preventing them from terrorizing the people. However, the dragons also brought rain with them and so the land suffered from severe drought.
The people begged Ikkaku to release the dragons, but he refused, believing so strongly in the righteousness of his actions. The people suffered more from their own hunger than from the dragons. Eventually a beautiful woman seduced the monk, causing him to break his holy vows. Ikkaku lost all of his power and the dragons were able to escape, bringing rains to the land once more.