Megumi Ayase reigns as Parthenon Productions' top idol before Creamy Mami’s arrival, embodying confidence and competitiveness to protect her leading status. Her rivalry ignites when Mami’s meteoric rise threatens her position, fueling jealousy over agency president Shingo Tachibana, whom she secretly loves. Frustration over his divided attention sparks volatile interactions, including impulsive slaps that betray her insecurity about his affections and professional focus.

The OVA *Long Good-Bye* deepens her arc, casting her in *A Story of Two Worlds*—a film mirroring her real-life fears of romantic neglect. A quiet bar beneath rattling trains frames her introspective conversation with manager Hayato Kidokoro, revealing vulnerability and unexpected camaraderie. This softer side contrasts her earlier antagonism, underscoring a capacity for growth.

In the spin-off manga *Magical Angel Creamy Mami and the Spoiled Princess*, Megumi navigates the tension between rivalry and mentorship. She oscillates between asserting seniority over Mami and reluctantly guiding her, her backstory painting her as ambitious yet flawed. Internal struggles pit her polished image against private doubts, highlighting her complexity.

Official media traces her evolution from rival to layered figure. A fear of heights and poised demeanor clash with candid moments discussing happiness and career strain. The OVA’s melancholic ballad *Last Kiss de Good Luck* reflects her artistry and refined persona, anchoring her narrative’s emotional core.

Her bond with Kidokoro matures from professionalism to mutual respect, their bar encounter cementing solidarity over shared struggles. The manga reinforces this growth, depicting her striving to compete honorably amid fame’s pressures, ultimately framing her as a multifaceted icon shaped by ambition and vulnerability.