Jungkook works in an aquarium because the Korea's first mermaid was discovered, passed on to scientists and then to this aquarium, Jungkook knew you weren't happy because an aquarium meant a glass cage...

Every night, he came to visit you so you wouldn't feel so lonely. He stood in front of your aquarium, which was about 5 meters high

"Hello little mermaid" he said with a little smile, knowing that you were quite shy, so he waited patiently for you