OVA
Description
Run Elsie Jewelria hails from Planet Memorze as royalty, the female counterpart sharing a body with Ren Elsie Jewelria. A defining evolutionary trait of Memorzorians causes a sneeze to trigger a complete gender transformation, switching between Run and Ren. This occurs more frequently on Earth compared to the monthly changes typical on their home world.

During childhood, both Run and Ren periodically visited Deviluke to play with Lala Satalin Deviluke. Run developed deep resentment towards Lala due to enduring her chaotic experiments and mischief. Ren, however, harbored affection for Lala. A childhood promise between Ren and Lala—where she agreed to marry him if he became a "real man"—later motivated their arrival on Earth, though Lala did not recall this vow.

Run first manifests on Earth when Ren sneezes, transforming into her. Initially immature, she relishes pulling pranks on Lala, though these attempts perpetually fail. A pivotal moment occurs when Ren (in male form) accidentally kisses Rito Yuuki. This sparks intense romantic feelings for Rito within Run, contrasting Ren's deepening dislike. Run's fixation on Rito becomes defining: obsessive, determined, and manifesting as frequent stalking born from genuine devotion. Her reactions to Rito's interactions with Lala or Haruna Sairenji range from jealousy to melodramatic misinterpretations.

In *To Love-Ru Darkness*, Run undergoes significant maturation. She ceases pranks against Lala, shifting focus to her career as an idol and actress. She releases multiple albums, occasionally collaborating with Kyouko after their joint work on the show *Magical Kyouko*, where Run portrayed an antagonist. Concurrently, she intensifies efforts to win Rito's affection, partly driven by a major biological change: reaching adulthood triggers a permanent separation from Ren into two distinct physical beings. This occurs in *Darkness* Chapter 9 (Episode 6 anime), eliminating their shared body and gender-swapping ability. Post-separation, Run exists independently, fully embracing her identity as a woman.

Physically, Run possesses long light green hair crowned by two distinctive points and maroon eyes. She stands 158 cm tall, weighs 49 kg, with measurements B83-W55-H83. Her typical attire is idol-style, notably the Blue Metalia outfit from *Magical Kyouko*.

Her abilities include notable physical strength and speed, enabling her to wield a large hammer, though controlling this speed while carrying heavy objects proves difficult. Before the permanent separation, both personalities could communicate subconsciously and feel each other’s physical sensations—a shared experience that ceased after their split.