Fine is the one of the twin princesses of Sunny Kingdom. She has red eyes and reddish-pink hair. Fine is referred to as one of "the most unprincess-like princesses in the history of Fushigi-boshi". She frequently whines whenever she sees or hears anything supernatural. Fine may be athletic, but also gluttonous. Just like her sister, Rein, she is not a very good dancer. Nevertheless, she is friendly, kind, and cares about the people she loves (including Shade). Fine is always slow on what others are thinking. She was the first one to find out that Eclipse (Shade) wasn't as bad as everyone thought he was (which soon leads her to fall in love with him). Fine can understand what Shade's little sister, Milky, is saying because they both like to eat. Fine usually do what's best for her without thinking, but Rein stops her. In the third series she marries Shade. 

In the hollow Mysterious Planet, seven kingdoms co-exist, all of them lit by the Sun's Blessing from the Kingdom of the Sun, in the middle of the planet. The light of the core sun is necessary for the continued existence of all the kingdoms. Yet, something is causing the Sun's Blessing to weaken. If something isn't done, it will be the end of life in the Mysterious Planet. Fortunately, the twin princesses of the Sun Kingdom, Fine and Rein, have been endowed with the magic of the Prominence, and are looking for a way to fix things. <br><br>
(Source: Anime News Network) 

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Fine and Rein are sent to the Royal Wonder Academy on the Royal Wonder Planet in order to study to become better princesses. They plan to make many friends, but unfortunately, the competition and cold nature of the students and teachers make things impossible. The twins also become Universal Princesses when touching the legendary Soleil Bell, releasing two angels named Pyupyu and Kyukyu to help aid them. Unfortunately, an evil force manifested in a painting doesn't seem to be satisfied about the Universal Princesses... <br><br>
(Source: Anime News Network)

Within the mysterious Wonder Planet exists seven beautiful kingdoms, and in the middle of it -- Sunny Kingdom, home to the cheery Princesses Rein and Fine. But one day, the Sun's blessing started to fade, endangering the entire planet! Can these clumsy princesses learn to wield their newfound magical powers and fix the disaster?!