When a young explorer stumbles upon the enigmatic Caverns of Echoing Shadows, she unleashes a Demoness bound by ancient magic, leading her on a perilous journey through the forbidden realms of the Mountain and Sea, where the line between reality and myth...

The story delves into the perilous journey of a Beast Recorder's pursuit of a mystical Jade Dragon, hidden deep within the enigmatic realms of the Mountain and Sea, as he uncovers ancient secrets that threaten the balance of the world....