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.

History
Stella is the 2nd Princess of the Vermillion Kingdom. As a child, Stella's magic powers were overly powerful that she can't control it and was burned many times in the process of mastering her powers. Eventually she succeeded in mastering her powers through rigorous training but decided to leave the country because she was worried about herself being conceited due to those surrounding her constantly referring her as a "genius".

Failure vs. Prodigy
While changing her clothers in her room, Stella was suprised to see a man suddenly entering her room which changes into horror when the man started stripping in a desperate attempt to solve things. She was later called to the Director's office as she encounters the same man, Ikki Kurogane again, as the two has a small bicker due to Ikki refusing to follow Stella's unreasonable demand which Kurono, the Director of Hagun Academy, suggest for them to have a mock battle to solve this issue. While Stella thought of this as an unreasonable way, Ikki's casual comment angers her and Stella changes the mock battle into a duel with an additional rule where the loser becomes the winner's slave.

The duo then head to a practice ground on the school to start the duel. As the duel begins, it was thought that Stella was the one with the advantage until Ikki counters back, using his Sword Steal and overpowers Stella's swordmanship, almost landing a decisive blow on Stella who was protected by her Aura which Ikki couldn't cut through. Stella giving Ikki her utmost respect, prepares to use her Noble Art, Katharterio Salamandra to finish off Ikki. She then notices the increase in Ikki's Magic Power and was surprised by it, as Stella starts to attack with Ikki easily dodging all her attacks before appearing behind her and hits a successful and decisive blow, ending the duel with Stella's defeat.

Stella then awakes in her room, in the aftermath of the duel, having fell unconscious after Ikki defeated her. She then had a short conversation with Kurono as she was unable to accept the fact that Ikki was forced to repeat a year, with Kurono revealing the truth about Ikki's family pulling his legs as well as the fact that Ikki is a F-ranker. After Kurono left, Stella who now is extremely curious on Ikki, climbs on top of the sleeping Ikki, as she starts to touch Ikki's body, only to be flustered when Ikki wakes up, resulting in Stella injuring her head by knocking the ceiling. As Ikki tends to her injury, Stella decides to ask Ikki about his dreams as Ikki tells her about his encounter with Ryoma Kurogane and how it help forged his dreams as Stella now accepting that Ikki was stronger than her and decides to chase after his back as Kurono told her to prior. Stella was then reminded of the ruling of the duel as Stella vehemently refused at first before giving up as she readies herself for Ikki's orders, as Ikki orders Stella to be his friend and roommate.

Abilities
Expert Swordsmanship: Stella is proficient in swordsmanship, being extremely skilful in her Imperial Sword Style.

Immense Magic Power: Stella possesses an immense amount of magic power that she was unable to control as a child. After years of hard training, Stella finally mastered her power and is now able to use powerful attacks continuously without showing signs of fatigue. According to Stella, her magic power is 30 times that of a normal Blazer.

Fire Manipulation: Stella's ability as a Blazer.

Device
Laevateinn: Stella's Device, it takes a form of a long sword clad in flames.
 * Dragon Breath: Stella's Noble Art. According to Stella, her Noble Art,  can go up to 3000 degrees centigrade in temperature.
 * Kalsariteo Salamandra: The second of Stella's Noble Art and 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.