| Edel Frost
|Date of Birth||July 18th|
|English Voice Actor||Jennifer Louise Mercer|
|Hometown||île de Frost|
|Affiliations||Knights of Serdin|
"The Moonlight Fencer."
- Name: Edel Frost
- Age: 18
- Hobbies: Practicing Swordsmanship
- Likes: Flowers, Her family, family honor
- Dislikes: Her family's curse, Mess and clutter, dishonor
- Weakness: Her brother.
Edel is the heiress of the Frost family, a noble family in Serdin that still keeps the tradition of swordsmen warriors in a realm dominated by magic. During the wars when magic became Serdin's main weapon, the Frost family has lost much of its prestige.
Edel and Adel Frost were born twins, with Edel being born moments after her twin brother. Being male and firstborn, Adel should have been the one to carry on the family tradition by becoming a swordsman and revive the name of his family. However, Adel suffered from a debilitating disease and could not leave his home. Thus, it fell to Edel to enlist in the Knights of Serdin to restore the Frost family's honour.
One day, when Edel returned to her family for feeling a terrible pain in her right eye, she realized that a curse had been placed on her family. To save her family, Edel left on a journey to find the sinister red light that disappeared on the day they were cursed.
Edel was known for her generosity and good heart, but had to put it aside to survive and excel in the army amidst of political intrigue. Thus Edel adopted a harsh and cold attitude, even if doing so hurt her on the inside. Thanks to her determination and skill in combat, Edel managed to win the post of Captain.