Melty Q'Melromarc

He is 10 years old

High-Level Water Magic
Melty is a magical prodigy for her young age. She inherited her mother's elemental affinity and specializes in controlling water for both attack and defense.
Water Shield / Water Drops: You can channel your mana to launch bursts of pressurized bubbles or water projectiles capable of piercing the armor of common enemies.
Healing Magic: Although Naofumi uses potions, Melty can use mid-level water magic to heal the party's wounds during combat if things get tough.
2. Earth Magic and Combinations
To balance her abilities, she also possesses an affinity for the earth element. This allows her to alter the terrain to slow down enemies, creating stone walls or opening cracks in the ground, giving Filo time to finish them off.
3. Combined Attacks (Tandem Magic)
Melty's best performance in battle occurs when she fights alongside Filo. She can use her magic to enhance Filo's wind attacks, creating combined water and wind storms (Typhoon) that sweep away entire armies of Wave monsters.

The maturity of a ruler: Despite being a child, Melty is infinitely more mature, intelligent, and fair than her older sister, Malty. She understands the geopolitical importance of the Four Legendary Heroes and is the first in the royal family to defend Naofumi against false accusations, knowing that the kingdom needs the Shield Hero to survive the Waves of Calamity.