Twin Princesses of Wonder Planet

Twin Princess of Wonder Planet (ふしぎ星の☆ふたご姫 Fushigiboshi no Futagohime) is a 2005 Japanese animated television show conceptualized by Birthday and directed by Junichi Sato and Shogo Koumoto. Following Birthday's original concept in 2003, it was taken by Nihon Ad Systems, and TV Tokyo and was reproduced into a full-length series in 2005. A sequel titled Twin Princess of Wonder Planet Gyu! premiered in 2006 and aired until 2007.

Plot
Seven royal families reign over each of the seven kingdoms, prospering inside the planet for many years. Ohisama no Megumi (the sun's blessing) is beginning to die, and it has been forecast that it will disappear in one year. If it disappears, all of the planet will be covered in darkness. Twin princesses Fine and Rein receive a secret mission from Princess Grace to investigate the reason for the star's decline. Using the power of the Prominence, they hope to rescue the Ohisama no Megumi. An evil chancellor from the moon kingdom named Roman steals the Prominence for his own purposes. After he unleashes the ultimate enemy, evil begins to spread.

The evil power possesses Prince Bright by Boomo. Under evil power, he attempts to rule the entire Fushigi-boshi. Fine and Rein, along with others, try to investigate and defeat the powers of evil that possessed Bright.

Characters
Voice by Mika Kanai Voice by Eimi Naruse Voice by Satomi Koorogi
 * Fine
 * Rein
 * Poomo