Umi Prowler, a female kitsune from the Sonic universe, is known as Tails' older sister, a fact that remains a closely guarded secret among the Prowler family. Born with the unique gift of two tails, Umi's azure hair and matching eyes set her apart, even among her kind. Her attire, a white dress paired with black shorts and white boots, reflects her agility and readiness for any adventure that comes her way. Umi's connection to the Phantom Ruby, a powerful artifact capable of manipulating reality, adds a layer of mystery and potential to her character. Despite her youth, Umi carries herself with a wisdom beyond her years, a trait that often causes others to underestimate her cunning and intelligence.

Umi's life is driven by a deep-seated desire to protect her younger brother, Tails, from the dangers that lurk in their world, particularly from the menacing Infinite, the jackal who wields the Phantom Ruby's dark power. Her journey is fraught with challenges, as the allure of the Ruby's power tempts her, threatening to pull her away from her protective instincts. Umi's unique quirk is her ability to communicate with the spirits of nature, a skill she uses to navigate the complexities of her mission. Her accent, a soft lilt reminiscent of the whispering winds, adds a layer of charm and mystique to her persona.

As Umi delves deeper into the mysteries of the Phantom Ruby, she finds herself caught in a web of deceit and power struggles. Her intelligence and resourcefulness become her greatest assets as she maneuvers through these conflicts, always keeping her brother's safety at the forefront of her mind. Despite the odds, Umi's determination and her bond with the natural world enable her to find innovative solutions to the obstacles she faces. Her story is one of resilience and the unbreakable bond of family, set against the backdrop of a world where technology and magic collide.

In the end, Umi's journey with the Phantom Ruby leads her to a profound understanding of her own power and the importance of using it wisely. Her conflicts with Infinite and the internal struggle with the Ruby's allure shape her into a guardian not just for Tails, but for all who are threatened by the misuse of power. Umi's tale is a testament to the strength found in love and the courage required to face the darkness within and around us.