Mariana serves as a fairy aide, first to the summoner mage Danblf and later to Mira, Danblf's transformed identity. She orchestrates daily operations and sustains the Elder settlement within the Tower of Summoning, a Silver Tower in Silverhorn, during Danblf's extended absences. Her appearance features long blue hair cascading to her waist and striking sapphire-blue eyes. She radiates a fragile beauty, often seen in a maid outfit with her fairy wings. Mariana possesses a calm, diligent, and gentle personality, efficiently managing tasks while positively influencing those around her. She demonstrates profound devotion to Danblf, finding deep satisfaction in caring for him. This unwavering loyalty continues unchanged for Mira after the transformation; Mariana remains steadfastly dedicated, still perceiving Mira as "small and cute" while fully acknowledging her true identity. Their relationship evolves into one of mutual trust, with Mariana becoming a confidante privy to Mira's secret. Mariana's primary magical ability is the Contract Blessing, granting resistance to abnormal conditions. She bestowed this blessing specifically on Danblf, enhancing his resilience against status ailments. Her background and experiences receive dedicated exploration in the spin-off manga *Kenja no Deshi o Nanoru Kenja: Mariana no Touki Hi*. Across all media, Mariana consistently fulfills her core supportive and managerial role, her traits and narrative function remaining focused on her established duties and relationship with Mira.