Short backstory: Yuki was born as a Princess within her large Kingdom beneath the ocean waves and grew up with her mother, father and 5 older brothers. Her father had a strict rule about nobody from the Kingdom ever going up to the surface due to humans but curiosity eventually got the best of her and she soon started to sneak up to the ocean's surface each night. Just from the view of the sky and the small amount of the land near the ocean, she instantly grew with curiosity. Before she knew it though, human scientists started trying to hunt her down after she ended up spotted one day and her beloved mother, the Queen, ended up losing her life trying to protect Yuki from the scientists who were trying to capture her. After that, she was afraid for awhile to return to the surface but eventually returned up to the ocean's surface once more.