Itsuki Myoudouin, recognized as Cure Sunshine, is a disciplined 14-year-old student council president at Myōdō Academy Junior High. Raised in a martial arts lineage, she assumed her family’s dojo leadership by masquerading as a male heir following her brother Satsuki’s illness, concealing her affection for frilly attire and delicate aesthetics to project authority. Her poised, princely facade gradually unraveled when classmates Tsubomi Hanasaki and Erika Kurumi persuaded her to join their Fashion Club, where she channeled her suppressed creativity into designing garments, merging duty with self-expression.

During a confrontation over her brother’s stolen Heart Flower, Itsuki awakened her role as Cure Sunshine with fairy partner Potpourri, wielding the Shiny Perfume to harness solar-themed abilities. Her attacks, such as Sunshine Flash, blend offensive strikes with sunflower-inspired support skills. Her transformation alters her appearance to golden twin tails and a floral-accented crop top, though her purification power remains constrained by Cure Sunburst’s influence, limiting her to temporary combat support. In her enhanced Super Cure Sunshine state, elongated hair, intricate armor-like attire, and rainbow wings unlock the collective finisher Heartcatch Orchestra.

Central to her growth are her bonds: Satsuki’s plight anchors her resolve, Potpourri’s loyalty bolsters her courage, and her friendships with Tsubomi and Erika dissolve her fear of vulnerability, letting her harmonize leadership with lace-adorned hobbies. The film *Fashion Show in the Flower Capital* spotlights her evolution as she navigates a Parisian runway event, symbolizing her fusion of martial rigor and design flair. Her arc culminates in embracing authenticity, proving strength thrives in uniting familial legacy with unapologetic femininity and empathy.