Mariana acts as a devoted fairy assistant to Danblf, a summoner mage once controlled by player Sakimori Kagami. When Kagami is transported into the game world as Mira—a young girl retaining Danblf’s identity—Mariana forms a profound bond with her, balancing practical aid with steadfast companionship throughout Mira’s journey. An elf gifted with ailment resistance by Danblf, Mariana embodies a nurturing spirit, prioritizing Mira’s well-being with attentive care. Her loyalty and warmth stem from a lasting history with Danblf, blending duty and genuine affection in her interactions. The spin-off *Mariana no Touki Hi* delves into her past, positioning her as a central figure whose ties to Danblf precede the main story’s events, though precise details of her origins remain undefined. Documentation limits her appearances to the primary series and this spin-off manga, maintaining her role as a consistent, unwavering supporter without recorded deviations.