Duramente is an Uma Musume from a prestigious and celebrated family of athletes, often referred to as the crystallization of a lineage of champions. She has long, reddish-brown hair that reaches her waist, distinguished by a characteristic light-colored streak in her bangs and a single rebellious cowlick. Her eyes have an intense, slightly upward-slanting gaze, and her posture is consistently one of quiet confidence. In her daily life, she is known for being serious, disciplined, and stoic, carrying herself with a maturity that reflects the high expectations placed upon her. However, this reserved exterior masks a fierce and almost untamed competitive spirit that emerges when she races, revealing a raw determination to prove her strength through actions rather than words.

Her motivations are deeply rooted in her family's legacy. She feels a profound responsibility to live up to her lineage, striving to become the strongest to honor her heritage. This pressure often leads her to hide her weaknesses and struggles, preferring to endure difficulties alone rather than ask for help. Despite her formidable presence, she is not without vulnerability; she can be surprisingly clumsy in mundane tasks such as cooking and harbors internal anxieties about meeting expectations. One of her most significant relationships is with Air Groove, a senior Uma Musume she has known since childhood and deeply admires, affectionately referring to her as "Sister Groove". She also shares a close bond with her roommate, Satono Crown, as they both navigate the burdens of their distinguished families.

In the story of the third season, Duramente is introduced as a dominant force and the primary rival to Kitasan Black. Her abilities are immediately on display as she decisively wins the Satsuki Sho and the Japanese Derby, establishing her as the leading talent of her generation. Her career trajectory is abruptly halted by an injury that forces her into a long period of rehabilitation, causing her to miss the opportunity to claim the Triple Crown. This setback becomes a pivotal point in her development. While recovering, she is forced to watch her rivals, especially Kitasan Black, succeed, which fuels her desire to return to the track. Her comeback culminates in a spirited race against Kitasan Black at the Takarazuka Kinen, where she fights through the lingering effects of her injury, ultimately finishing second. Through this experience, her rivalry with Kitasan Black evolves from simple competition into a relationship of deep mutual respect, with Kitasan even giving her the nickname "Durachin". Athletically, she is known for her exceptional endurance and agility, particularly excelling in lateral jumping tests, though her career is notably defined by her brilliant but injury-shortened peak.