Melty Q. Melromarc, second princess and designated heir to Melromarc's throne, sports blue curly pigtails tied with blue ribbons, purple eyes, and frilly blue-and-white royal attire. Despite her youth at approximately ten years old, she displays maturity, politeness, and a strong sense of responsibility. She consciously avoids misusing her authority, extending kindness to commoners and demi-humans alike—a trait distinguishing her from other Melromarc nobles. Her moral foundation stems from direct upbringing by her mother, Queen Mirellia Q. Melromarc, who engaged her in diplomatic affairs early to cultivate leadership. Consequently, Melty rejects Melromarc’s state religion and maintains a broader worldview.
Her personality sharply contrasts with her elder sister, Malty S. Melromarc. While publicly composed, Melty reveals a more expressive, childlike side during extended interactions with Naofumi Iwatani’s party, particularly around the filolial Filo, with whom she shares a close friendship—bonded by Melty’s inherited interest in filolials from her mother. Filo’s trust in Melty serves as a significant narrative endorsement. Melty specializes in water-based magic, opposing Malty’s fire affinity, and her blue motif contrasts Malty’s red-and-brown themes. Queen Mirellia selected Melty as crown princess due to Malty’s volatile nature and the king’s ineffective spoiling; Mirellia prioritized Melty’s rulership education while sending Malty abroad—a failed reform attempt.
Throughout her story, Melty faces direct threats from Malty, including assassination attempts driven by succession resentment and power lust. These dangers force Melty into peril, often requiring protection from Naofumi and allies. Her relationship with Naofumi evolves from diplomatic formality to genuine, cautious trust, facilitated by Filo. Melty’s resilience is tested during the Waves of Catastrophe and political unrest orchestrated by factions like the Church of Three Heroes. She actively stabilizes the kingdom, demonstrating strategic insight inherited from her mother and growing confidence in leadership. Her journey involves navigating complex family dynamics, including King Aultcray’s initial favoritism toward Malty and his eventual redemption efforts. Melty’s development emphasizes increasing autonomy and commitment to just governance amid adversity.