Himawari Hagiwara competes with the professional wrestling group Berserk as the younger sister of globally celebrated wrestler and idol Sakura Hagiwara. After winning her debut match, she declared a dual-wielding fight against Utahime and entered Utahime Dream under a reverse designation. Her fighting spirit morphs stages into wrestling rings, where she demonstrates overwhelming power against other Utahimes.

Within the Utahime project, performers vie for the Utahime Queen title through singing and performance skills. Himawari contributes original songs and covers spanning Showa, Heisei, and Reiwa eras—including "Runner," "Beautiful Dreamer," "Gekkou," and "Hikaru Nara"—fusing wrestling intensity with musical performance in Utahime Dream's competitive structure.

This character debuts in the franchise's manga serialization starting February 13, 2025, and will feature in the announced anime adaptation. She pursues success in both wrestling and music through direct confrontation and relentless determination.