"Don't cry! We'll lose if we cry!"
Rein to Fine and Poomo in "Large Reckless Driving Black Crystal"

Rein-chan profile





Rein's Outfits
Kingdom: Sunny Kingdom
Race: Human
Gender: Female
Age: 8
Height: 117 cm
Love Interest(s): Bright (Anime)
Shade (Manga)
Notable Relatives: Truth (Father)
Elsa (Mother)
Fine (Twin sister)
Occupation(s): Princess
Series: Fushigiboshi no Futagohime
First Appearance: Episode 1
Voiced By: Yuko Goto

Rein (レイン; Rein ) is the main protagonist of Fushgiboshi no Futagohime and one of the twin princesses of the Sunny Kingdom along with her sister, Fine. She is known as one of "the most unprincess-like princess since the beginning of the Mysterious Star".


Rein's appearance is mostly inherited from her father, Truth. She has sea-green eyes and blue hair. Her hair is usually loose with a gold ring tied at the end. Rein's usual outfit consists of a blue top hat, a light blue coat, a short blue skirt, long white socks, and a pair of blue boots.


Rein loves to dress up and wear elaborate accessories. She is crazy when it comes to romance and daydreams about Bright all the time.

She is willing to help anyone in need no matter the situation. Rein is very adventurous and brave. However, Rein is also caring and eccentric, coming up with positive and intelligent solutions to problems.

In the manga, she had more of a tomboyish personality than in the anime. In the anime, she is most embarrassed when her twin Fine is unable to eat and cries. In the manga this doesn't seem to bother her all that much.

Rein doesn't mind losing the Princess Parties and being seen as unpopular as long as she makes the people who care about her proud.

Her biggest flaw is that she gets jealous very easily and tends to jump to conclusions. It can be seen in first and second season.


Receiving the ProminenceEdit


Rein and Fine tries to get out of Lione's way.

Rein, along with her twin sister Fine are known as the most unprincess-like princess since the beginning of the Mysterious Star. They are first seen looking at the other kingdom's airship as they land for the Princess Party at their kingdom. However, a princess named Lione escaped the Flame Kingdom's airship on a parachute and went inside the kingdom. Rein and Fine then chase after her and they all collide as she lands. After introducing each other, Lione explains how she is afraid of being in public and if she dances, she's sure to stumble and humiliate herself. Rein and Fine then encourages her to dance and Lione starts to feel better.

When Lione leaves, Rein and Fine then experiences a bright light and Rein bravely walks towards the suspicious light dragging Fine along with her. Rein and Fine ends up in a field of light and finds a ghost that introduces herself as Princess Grace, a princess who risked herself to save the Sunny Kingdom when it's light was going to disappear. She explains that she let them into the center of the Blessing of the Sun to explain that the light is going to disappear within a year once again and asks Rein and Fine to save it. However, because they aren't capable of doing it yet, Princess Grace gave them a trial and using the power of the Prominence, they need to help as many people as they can in the Mysterious Star with the help of Poomo.


Rein and Fine meets Princess Grace.


Rein dances with Bright.

When the Princess Party begins, Fine has Rein dance with Prince Bright so she go off and eat food. Rein is honored to dance with him, but she only wore her normal clothes and messed herself up while dancing. Bright manages to make her feel better and she becomes more attracted to him. When it's Lione's turn, all the lights powered by the Blessing of the Sun loses it's light and Lione becomes depressed with all the negativity.

Rein and Fine uses this chance to use the power of the Prominence which changes their hairstyle and attire into a form of a princess. They use this power to shine a bright light on Lione and she accepts Bright's offer to dance. Without making any mistakes, Lione manages to be the Best Princess earning the title of the Best Smiling Princess.

Character ConnectionsEdit

Princess Fine: Fine is Rein's twin sister and a princess of the Sunny Kingdom! The twins are trying to save the Mysterious Star and all of its inhabitants with the power of Prominence. Rein cares for her sister a lot, going so far as to call Fine her "better half" in the manga.

Prince Bright: Prince Bright is Rein's main love interest in the anime and in manga. She often daydreams about him. By the first season finale Bright returns her feelings and they are together as well in second season.

Prince Shade: Prince Shade seems to have fallen in love with Rein at first in anime but later on took off to Fine. As for the story in the manga, he is only interested in Rein. She seems to be put off by his advances and tries to get Fine towards Shade as Rein was in love with Bright even in manga. Shade was constantly saving her both in the manga and first season.

Prince Fango: Rein was the first one to approach Fango even after hearing that he's violent and being told that she should steer clear of him. He began to develop a crush on Rein after she called him a "good person" in the second season's fifth episode. He took on Shade's original role of saving Rein whenever she was in danger. However, by the forty-fifth episode of the second season his feelings would shift to Elizabetta.


  • In the manga Rein has purple hair instead of blue.
  • In Birthday's original concept some info about Rein they give is that she is eight years old, her height is 117 cm, her favorite color is blue, and her hobby is dressing up.
  • Rein (unlike her sister) really loves ghosts and scary things.