The inspiration came from "Ultimate Mermaid Island". The title came from my roommate who kept screaming about so-and-so being handsome and nymphomaniac while watching "The Legend of the Blue Sea". I chose this name because I was unhappy for a while. The reason why I labeled it Shiori is because the heroine He Shiyu is based on Shiori, and the male supporting actor is based on Mitsuhiko Ishihori (the male protagonist? Doesn't exist).
But it's completely original, the above are just sources of inspiration.