Sharon, princess of the fallen Snow Kingdom of Shantia, once consumed by a meteor’s cataclysm 13,000 years ago, is reawakened by the meteorite’s latent energy. Driven by grief over her lost realm, she channels its power to resurrect Shantia, inadvertently freezing performers at her coronation and unleashing snow monsters upon the Tropical-Rouge! and Heartcatch Pretty Cure teams. Her desperate quest for restoration masks profound isolation, a ruler severed from her people and purpose.

Her bond with Laura, forged amidst conflict, leads her to bestow the Snow Heart Kuru Ring—a relic of Shantia’s lineage. This artifact evolves into the Snow Crystal Tropical Style, pivotal in purifying Sharon’s corrupted resolve. Confronted during the final clash, Laura’s rendition of Shantia’s anthem and the Heartcatch team’s revelation of surviving snowdrops—the kingdom’s eternal emblem—soften her fury. She accepts that Shantia’s legacy transcends physical rebirth, enduring through symbols and memory.

Purified, Sharon thanks Laura for rekindling her hope before dissipating peacefully, assured her kingdom’s spirit persists in blooming snowdrops and the Cures’ guardianship. Her story closes with Shantia’s anthem echoing at a public ceremony, its melody a testament to cultural continuity, as the protagonists ensure her world’s essence remains unforgotten.