“How long do you think that power of yours will last, huh? It’s not eternal…” “And so, I waited for someone who could defeat me. Now, I’m tired of it.” When the dragon with a broken heart spread its curse, Blue didn’t have any other thoughts. She just wanted to dive into the deep water and enjoy the sweet water. “Who would pass by a person drowning in a pond in the middle of the night without helping?” But when she opened her eyes, the vast sea had turned into a square, ordinary pond of Joseon. “What on earth are you? Did you come to steal precious books from the royal library?” Blue had become an unwelcome guest in this unfamiliar land of Joseon. “You emit a very unpleasant smell to me.” “Unpleasant smell? What are you talking about?” The person who discovered Blue was an unpleasant human with a façade that differed from their true self. Still, the person unexpectedly tried to protect Blue, thinking it might be weaker than a fish. “I promised to send you back to the world you came from, and I always keep my promises.” Despite distrusting Blue due to its arrogance, the insignificant human now tried to protect her, and there were conditions for that protection. “…If I’m not satisfied with you, then I’ll truly crush your heart, so keep that in mind.” “Well, then it’s definitely a promise.” Frustrated but unable to use her power properly due to the curse, Blue didn’t have many choices in this land. “To monopolize each other.” Will Blue be able to return to her own world, her own sea, and sleep peacefully?