Mizuki Hoshiko

Mizuki Hoshiko is one of the main protagonists in Starlight Pretty Cure. Hoshiko is a quirky and spontaneous 14 year-old girl who is actually from Lun, the kingdom known as the moon to people on Earth. Her alter ego is Cure CelesteKyua Seresute (キュア セレステ), the legendary guardian of the kingdom of Lun.

History
Hoshiko used to live in the kingdom of Lun, but now lives on Earth for an unknown reason.

Personality
Hoshiko is a quirky and spontaneous 14 year-old girl who is rather bad at studying. Even though she's the more energetic one of the two, she can still be serious when necessary. She is pretty athletic, even though she has no interest in sports,with the exception of swimming. She also loves fashion and sweets.

Relationships
Hinata Akemi

TBA

Sedna 

Sedna is Hoshiko's fairy partner from Lun.

Cure Celeste
Cure Celeste is Hoshiko's Pretty Cure alter ego. In order to transform, she must insert the Lun Charm into her Cyalume Pact, hold hands with Akemi and shout "Pretty Cure Galaxy Illumination!".

Songs
Hoshiko's voice actress, Tokui Sora, has participated in several songs for the character she voices. Some of these songs include duets with Iida Riho, who voices Hinata Akemi.
 * The Moon's Present
 * Mystic Nights

Trivia

 * Hoshiko is the eleventh Cure to originate from another world, preceded by Kujou Hikari, Mimino Kurumi, Higashi Setsuna, Kurokawa Ellen, Shirabe Ako, Kenzaki Makoto, Shirayuki Hime, Akagi Towa, Izayoi Riko and Hanami Kotoha.
 * Hoshiko is the second Cure to already have powers outside of her Cure form, preceded by Izayoi Riko.
 * Hoshiko shares a few similarities with Shirayuki Hime:
 * Both are the blue Cures of their respective teams;
 * Both love fashion;
 * Both are the comic relief of their respective teams;
 * Both originate from a different world;
 * Both have long hair in their normal forms and have twintails in Cure form.
 * Hoshiko is the second Cure to have her brithday in December, preceded by Akagi Towa.
 * Coincindentally, they both come from a different world than their respective teammates.
 * However, Hoshiko is the first Cure whose zodiac sign is Capricorn. Towa's zodiac sign is Sagittarius.
 * Hoshiko's birthday is on December 21st, which happens to be the first day of winter.
 * Cure Celeste is the third Cure to represent the moon, preceded by Cure Bright and Cure Moonlight.
 * Cure Celeste is the first blue Cure to not have blue or purple hair in Cure form. In her case, her hair is orange.