The coast at the end of the Eastern continent, where the Yeon grew up, was far from the world. But everything has changed since her village was attacked by the demons. Although Yeon lost her sight when she was young after being severely wounded during a monster invasion, she can see everything by feeling the waves and the currents of nature. Quickly she followed her dreams and became a pirate. Despite the fearful rumours, she's actually a savior of the sea. Helping fishermen lost out at sea.