Jeon Hae-ri

To escape an arranged marriage in the Dragon Palace, Kim Yong-man, the dragon king's daughter, flees to the human world and begins high school, determined to become the top of her class. There, she encounters Shim Hae-soo, the current number one student sitting beside her. As rivalry shifts into friendship, the two gradually become special to each other.

Rainbow Bubblegem recounts the magical adventures of seven mermaid princesses who must go to school on land to search for enchanted jewels to save their undersea realm from an evil witch.