Rein is the second protagonist of the series and the other twin princess of Sunny Kingdom. She may look identical to her sister, Fine, but her eyes are sea-green and her hair is blue and much longer than Fine's. Rein is also referred to as one of "the most unprincess-like princesses in the history of Fushigi-boshi", but unlike Fine, she is likes to dress up and wear elaborate decorations. Rein gets crazy when it comes to romance and always end Bright's name with "-sama". She's adventurous, but as friendly, eccentric and caring as Fine. Rein often thinks positive ways to fix things, and acts more feminine than Fine. Her name was originally spelled with an "a" in English, but the director, Junichi Sato, doesn't want her name to be related to the weather "rain".  Note: In the manga (and some of the episodes in the anime), Rein had some affection for Shade. Although she was with Shade in some of the episodes in the anime, she is much more in love with Bright.

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) 

__Height:__ 163cm
__Hobbies:__ Motorcycle, reading, traveling

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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?!