Movie
Description
Originally from the dimension of Labyrinth and known as Eas, Setsuna Higashi served as a loyal operative under Moebius. As Eas, she displayed a cold, calculating personality marked by fierce determination and unquestioning obedience to Labyrinth's objectives. Her appearance featured silver hair, red eyes, and a distinctive black-and-red combat outfit adorned with diamond-shaped gems.

Dispatched to Earth under the alias "Setsuna Higashi," she adopted a human disguise with dark purple hair and ordinary clothing, initially maintaining her detached demeanor. Her mission involved undermining the Pretty Cure team, particularly Cure Peach (Momozono Love). Prolonged exposure to Love's kindness and friendship, however, gradually eroded Eas's loyalty. This internal conflict culminated in episode 23 when she sacrificed her life for Moebius, only to be resurrected through the Akarun and Chiffon. This rebirth transformed her into Cure Passion, the fourth member of the Fresh Pretty Cure team.

Permanently assuming her human identity after rebirth, Setsuna moved into the Momozono household, developing a sisterly bond with Love. Her personality shifted toward shyness and reserve, compounded by lingering guilt over her past as Eas. She struggled with social norms and Earth's customs, displaying naivete in everyday interactions. Supported by her teammates—Love, Miki, and Inori—she gradually became more open and cheerful over time, while retaining her core traits of seriousness and determination, now focused on protecting others.

As Cure Passion, she transforms using the phrase "Change, Pretty Cure! Beat up!" and declares, "The scarlet heart is the proof of happiness! Freshly-ripened, Cure Passion!" Her design features light pink waist-length hair, a red-and-black layered dress, a clover brooch, and a Linkrun device worn on her right hip. Her primary weapon is the Passion Harp, enabling attacks like *Happiness Hurricane* and group techniques such as *Lucky Clover Grand Finale*.

Her character evolves through enhanced forms:
- **Cure Angel Passion**: Accessed via miracle light in the *Fresh Pretty Cure!* finale, this form adds white angel wings, elongated dress layers, and the attack *Loving True Heart*.
- **Cure Rainbow Passion**: Featured in *Precure All-Stars DX3*, this iteration replaces her white wings with smaller golden ones while retaining the extended design elements of her Angel form.

Post-series, Setsuna reconciles with her past by aiding Westar and Soular in reforming Labyrinth. Her journey consistently explores themes of free will and redemption, symbolized by her catchphrase, "I'll do my best!"—reflecting her unwavering resolve to seek genuine happiness.