Melida Bowen, Shin Wolford's adopted grandmother, is the revered magic tool creator known as "The Guru," celebrated for her mastery of enchantment magic and development of magical gear. She was previously married to the legendary wizard Merlin Wolford. Together, they fought as heroes against demonic threats, including a notorious demonized human. Their marriage ended in divorce after the death of their son, Train Wolford, killed by a demonic beast. This tragedy inflicted profound regret and distress, rendering their continued coexistence unbearable. She presents as a tall, dignified elderly woman with sharp style, frequently wearing glasses, a pointed hat, and robes evoking a witch-like aura. Her typical attire includes a purple shawl over a light purple dress or a formal white robe with dark purple edging. A magic-based exercise tool crafted by Shin helps maintain her impressive physique despite her age. In her youth, she possessed striking beauty and figure. Artistic depictions sometimes exaggerate her features with fangs or serrated teeth when angered. Her personality blends sternness with perceptiveness. She frequently scolds Merlin for encouraging Shin's reckless magical experiments and admonishes Shin for creating overly powerful or dangerous inventions, occasionally revealing subconscious jealousy over his innovations—unaware his knowledge stems from Earth's science. Despite her nagging, she deeply cares for Shin as her grandson, becoming fiercely protective when political forces seek to exploit him. She struggles to accept compliments, downplaying her achievements in magical gear development, and prefers rural solitude to avoid public attention. Melida is socially astute, quickly recognizing Sicily von Claude's romantic feelings for Shin and deducing Merlin's efforts to normalize Shin's abilities through Gate magic. Chronologically, she appears during Shin's childhood, expressing alarm when he hunts boars at age eight. By his tenth year, she theorizes his otherworldly origins based on his unique enchantment skills. At Shin's fifteenth birthday, she criticizes Merlin for neglecting to teach him societal norms and chastises both for destructive magic displays. She later supports Shin's relationship with Sicily, noting Sicily's honesty and predicting Shin would be "henpecked." Key relationships define her: her dynamic with Shin mixes exasperation at his recklessness with unwavering familial love; Shin occasionally ignores her lectures due to their repetitiveness. With Merlin, she maintains an amicable post-divorce bond, collaborating in raising Shin while continuing to berate his permissiveness. She identifies Sicily as her granddaughter-in-law, approving of her influence on Shin. Her son Train, a magic craftsman who shared her interests, remains a pivotal trauma in her life following his death. Melida specializes in enchantment magic, engraving spells onto objects via her staff. She pioneered numerous magic tools that ease daily life, earning international renown. Combat flashbacks show her using her staff to deflect magical attacks.