Myoudouin Itsuki (明堂院 いつき Myoudouin Itsuki) is the student council president at the Myoudou Academy Junior High School. She is the granddaughter of Myoudouin Gentarou, the president of Myoudou Academy. Because she looks and dresses like a male, she is often mistaken as one by new students, and even people who know about her situation state that sometimes they forget that she is a girl. She cross-dresses because she chose to take the place of her older brother, Satsuki, who is too sick to act as the heir of the family dojo. Her Heart Flower is the peony, symbolizing her rebirth as a person and her noble background. Itsuki's Cure ego is Cure Sunshine (キュアサンシャイン Kyua Sanshain) and her catchphrase is "I will heal the darkness in your heart with my light!" (その心の闇、私の光で照らしてみせる! Sono kokoro no yami, watashi no hikari de tera shitemiseru!). Is the love interest of Tsubomi Hanasaki (Cure Blossom).