Aya and her mother were hunted by a mysterious figure. Aya escaped and was rescued by the master of the Ruby Pavilion. However, when she was fifteen years old, she received something from the mysterious figure. So she decided to break into the chaotic rivers and lakes alone to investigate the reason for being hunted and the true identity of the mysterious figure. However, it led to even more confusing things... The rivers and lakes, the mysterious figure... The world is so big, it seems that there is no destination...
Concept: Growth and pain are all there, independence and maturity make people shine