Stella Vermillion

Stella Vermillion is the main heroine of A Chivalry of the Failed Knight. An A-ranker Apprentice Knight and princess of the Vermillion Kingdom.

Device
Laevateinn: Stella's Device, it takes a form of a long sword clad in flames. According to Stella, her Noble Art,  can go up to 3000 degrees centigrade in temperature.
 * Kalsariteo Salamandra: Stella's ultimate technique, Laevateinn transforms into a sword made from heat that had no physical body, and can reach a target more than a hundred meters away.