Mitsurugi Kyouya
 Japanese 御剣 響夜
• Characteristics•
 Race Human
 Gender Male
 Hair Color Blond
• Professional Status•
 Affiliation Kingdom of Belzerg
 Occupation Swordmaster
• Personal Status•
 Status Alive
• Debuts•
 Light Novel Volume 1
 Manga Chapter 8
 Anime Episode 5
• Portrayal•
 Japanese Voice Eguchi Takuya (anime)
Toriumi Kousuke (Drama CD)
 English Voice Billy Kametz

Mitsurugi Kyouya (御剣(みつるぎ) 響夜(きょうや)) is a Japanese citizen who was reincarnated to the fantasy world like Kazuma.


Kyouya appears as a dashing young man with blue eyes, dirty-blonde hair and a fit physique. He wears a full set of plate armor blue in color and with gilded borders, as well as a wing motif on the chest area. Under his armor he wears black formfitting garments, and a cape of the same color hangs from his shoulders. A loose scarf-like red collar covers his neck area, and on his head partially hidden by his hair he wears a jeweled circlet. Overall, his appearance is reminiscent of a knight in shining armor or charming prince.


Along with his looks, Kyouya's personality reinforces his 'prince charming' characteristics even more. Idealistic, heroic, noble, and well-meaning, he has the character of a stereotypical hero of a traditional fantasy story or RPG, and is a foil to Kazuma. In the fantasy world though, while he's successful in standard protagonist-esque endeavors such as dragon slaying, fate does not do him any favors with Kazuma and his party; many of their encounters tend to end in misfortune for him. His chivalrous nice guy character does not do much to endear him to others either, and many of the girls he interacts with perceive him as creepy, intrusive, and self-absorbed. Due to the way Aqua presented her offer of reincarnation, he believes that he is the main character and chosen one of the story.


Mitsurugi lived in Japan before discovering a new life in the fantasy world. Before the beginning of the main series, Aqua sent him to the Fantasy world with the Cursed Sword Gram as his gift. By the time he meets Kazuma, he has already made a name for himself as a well-regarded hero and gained a pair of female admirers who follow and regularly bicker over him.


Being a reincarnator, Mitsurugi has enhanced statistics and a cheat item in the form of the Cursed Sword Gram granted to him by Aqua. Like the others (barring Kazuma), he is extremely powerful, capable of taking down extremely powerful foes such as an Ancient Dragon in a single hit, or rip open metal bars with his hands.