Episode 1

Failure Knight I is the first episode of the Rakudai Kishi no Eiyuutan anime. It aired on October 3, 2015.

Summary
Ikki Kurogane, a teenager who is known as the Worst One throughout his school for his lack of talent, prepares himself for usual morning training. Elsewhere, Stella Vermillion, the princess of the Vermillion Kingdom is seen arriving in Japan and will enroll in the Hagun Academy. Upon finishing his training, Ikki returns to his room and walks in on a half naked Stella who was changing as the situation was made worst due to Ikki's bad attempt of getting even by stripping himself.

Ikki was then summoned to the director's office where he was criticized by Kurono for his indecent behavior before summoning Stella into her office for Ikki to formally apologize to her. Stella, however, demands Ikki to perform harakiri as an apology much to Ikki's dismay who accidentally blurted out that he refuses to commit suicide just over seeing Stella in her underwear. Enraged over Ikki's comment, Stella starts to emit flames with Kurono leaving the office to avoid getting involved. Ikki in desperation, claims that he was mesmerized by Stella's beauty, surprising the girl as her flames weaken out of shyness. As Ikki tries to explain the situation again, Kurono comes back and reveal that both Ikki and Stella are roommates much to their surprise.

Kurono then brings the two of them to their room and reveals the reasoning to why they are roommates much to Stella's displeasure as she gives more impossible demands to Ikki. To solve the problem, Kurono gives both of them the option of settling the issue with a duel which eventually escalated into a duel with the loser becoming the winner's slave for life under Stella's demand after Ikki's casual remark on the victor being unknown till they actually fight.

Characters in Order of Appearance

 * 1) Ikki Kurogane
 * 2) Stella Vermillion
 * 3) Kurono Shinguuji
 * 4) Ryoma Kurogane
 * 5) Kagami Kusakabe
 * 6) Tohka Todo
 * 7) Ayase Ayatsuji
 * 8) Shizuya Kirihara
 * 9) Nene Saikyo

Light Novel and Anime Differences

 * Kurono reveals Ikki and Stella are roommates in her office instead of their room.
 * Stella wakes up in a medical facility room in the anime instead of her own room.
 * Kurono did not reveal the circumstances surrounding Ikki and his family.
 * Nene, Tohka, Ayase and Kagami was not present in the Light Novel during the mock battle between Ikki and Stella.