Hoshina Hikaru (星奈ひかる?) is one of the five main Cures in Star☆Twinkle Pretty Cure, and she is also the group leader. She is a second-year student at Mihoshi Middle School. Hikaru's alter ego is Cure Star (キュアスター?) and she is known as the Pretty Cure of Stars. Her catchphrase is "Twincool~☆" (「キラやば～っ☆」 "Kirayaba~☆"?), which was inherited from her father.