Stella Vermillion

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

Appearance
Stella is a young girl with long crimson hair tied in twin-tails and crimson eyes. Stella is of average height and has large breasts and a voluptuous figure. Ikki likens her appearance to "a painting of a goddess", and that her beauty "left no room for wicked lust".

Personality
Stella initially appears to be feisty, hot-blooded, and quick to anger possibly due to her sheltered upbringing. However, later she is shown to be anything but bitter, and is even willing to admit her mistakes and be friendly with others. Despite this, she is still reckless and impulsive, and exhibits frequent bouts of jealousy especially when it comes to Ikki. Stella dislikes being called a prodigy or genius, and holds contempt for anyone who views her natural abilities as her only source of strength. Like Ikki, she had never previously socialized with members of the opposite gender.

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 bickers 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 understand why Ikki had to repeat a year. Kurono then reveals the truth about Ikki's family pulling his legs as and 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. After 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. Stella now accepting that Ikki was stronger than her and decides to chase after his back as Kurono told her to prior before being reminded of the ruling of the duel as Stella initially refused before giving up allowing Ikki's orders Stella to be his friend and roommate.

New Term, Reunion and Rebellion
A few days after her duel with Ikki, Stella started to accompany Ikki on his daily training to further improve herself albeit with some difficulties at first. She then notices Ikki's eagerness at the new school term and he explains that he was looking forward to seeing his sister. On the first day of the new term, Stella attends the orientation where she was briefed on the new school rules. The orientation ended abruptly after the homeroom teacher, Yuuri Oreki, had to leave due to her weak constitution. A group of female students approaches Ikki much to Stella's displeasure and was made worst when Shizuku appears kissing Ikki as a angered Stella reveals that she is Ikki's slave which resulted into utter chaos as Stella and Shizuku destroyed the classroom in a fight. Stella was then placed under 1 week of house arrest as punishment.

Stella then goes on a outing with Ikki, Shizuku, and Nagi, as enjoy their time together. Stella and Shizuku are then left alone, as Ikki and Nagi went to the bathroom together. They are later both seen in a hostage situation. Stella at first tries to hide her identity, but fails, when she saves a mother and her child. She then meets the Apostle, who is able to defeat her using underhanded tricks. She then agrees to strip down if he would leave the mother and child alone, but is save from the shame of striping naked, by a well placed barrier, by Shizuku, and a well timed attack by Ikki who took out the arms of the apostle, while Stella is able to take out the rest of the members. Kirihara then appears, finishing the rest of rebellion. Kirihara and Stella then argue, as Kirihara had just called Ikki a coward, and made a deal, as they just found out that Ikki will face him in the qualifying match, should Ikki loose to him, she would be his girlfriend, but if he looses he would apologize to Ikki. She then looks at a fearful Ikki who states that Kirihara is the worst opponent for him.

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.

Dragon Breath: Stella's ability as a Blazer, she can control the Dragon Breath's flames.

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