This drama is amazing if you liked bittersweet ending with every single entertaining episodes

For me this drama is amazing in the first episode lusi just like mermaid and the music is fabulous when I hear the music its feel like I'm watching some Disney princess movie and in every single episode their are something new and the ending is so good i don't like sad endings but they didn't show the death of ml in drama so for me that is the best happiness but i cried for side characters they describe the side characters amazingly and lusi gives this time something new, the character she played is new so whole package for me ??