Est is Kamito's contracted spirit. She is a powerful sword spirit. In elemental waffe form she transforms into a sword known as Demon Slayer, Demon King Killing Sacred Sword, or The Sacred Sword of Severian.

Only a pure maiden can have the privilege to contract with a spirit. Priestesses, who can summon spirits from Astral Zero, the world of spirits, and have full command of their power, are called elementalists. Kamito Kazehaya is the only male with this privilege, and due to what happened in the past he comes to Areisha Spirit Academy where priestesses are trained to become elementalists. He is then told that he is to transfer to the school, form a team with priestesses to compete in Blade Dance where the most powerful elementalist is chosen, and win. (Source: Crunchyroll)

__Height:__ 164 cm

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**Non-Anime Roles:**
~!- Amber Butterfly - Kemono Friends (VG)
- Amour - Memento Mori (VG)
- Chloe - Criminal Girls 2 (VG)
- Concetta - Fate/Grand Order: Edmond Dantes (Drama CD)
- Edelgard von Hresvelg - Fire Emblem Three Houses (VG)
- El_Clear - Muse Dash (VG)
- Exeter - Azur Lane (VG)
- Flora - Fire Emblem Fates (VG)
- Hikari Tominaga - White Day: A Labyrinth Named School (VG)
- Ion - Ar nosurge ~Umare Izuru Hoshi no Inoru Uta~ (VG)
- Ion - Ciel nosurge ~Ushinawareta Hoshi e Sasagu Uta~ (VG)
- La Coiffe - Granblue Fantasy (VG)
- Lancelot Akirei - Onigiri (VG)
- Laplace - Goddess of Victory: Nikke (VG)
- Ludmilla - Goddess of Victory: Nikke (VG)
- Mary Shelley - Rinka Nation (VG)
- Momoka Yamabuki - ISLAND (VG)
- Rin - Granado Espada (MMORPG)
- Rosaria - Genshin Impact (VG)
- Rulutieh - Utawarerumono: Itsuwari no Kamen (VG)
- Rurutie - Azur Lane (VG)
- Ryu - Hero Must Die (VG)
- Sarasa Morikawa - Blue Reflection: Maboroshi ni Mau - Shoujo no Ken (VG)
- Sora Ikushima - Tokyo Xanadu (VG)
- Takao - Azur Lane (VG)
- Unicorn - Azur Lane (VG)
- Yuri Sakizaki - The King of Fighters XIV (VG)!~

Mini specials bundled on each Blu-ray/DVD volume of Seirei Tsukai no Blade Dance.

Each special is tied to the new 32-page short story that original light novel author Shimizu Yuu is writing for the limited first pressing of every Blu-ray/DVD volume.

Only a pure maiden can have the privilege to contract with a spirit. In here, Areishia Spirit Academy, trained maidens of noble families are gathered and given an elite's education to become spirit contractors. A boy, Kamito, peeped by accident at a girl, Clair, while she was taking a bath and he ended up making a contract with the spirit she wanted. Yes, Kamito is an irregular boy spirit contractor whose existence was thought impossible until now. "You stole...my spirit...you have to take responsibility for it!" "Huh?" "You have to become my contracted spirit!" What will Kamito's destiny lead to?
 
Note: Includes 19 prologues, 18 epilogues and 2 interludes.

Kazehaya Kamito has been summoned to the girl's school Areishia Spirit Academy, which teaches noble young ladies how to make contracts with powerful spirits. On his way, he has the misfortune of catching sight of one of these lady spirit contractors bathing. She is Clair Rouge, and she is contracted to a spirit named Scarlet, though she has her sights set on a more powerful spirit. Kamito convinces her to lead him to the school, but she stops on the way to make a contract with this powerful spirit. When Kamito ends up 'stealing' the powerful spirit, it is revealed that he is actually an unheard-of male spirit contractor! What could be the origin of his power? Now Clair is determined that he's going to have to support her, since she believes that the spirit he now has power over what should rightly be hers. 
(Source: MangaHelpers)

Only a pure maiden can have a privilege to contract with spirit. In here, Areishia spirit acadamy, trained maiden in the noble family were gathered, and gave them an elite education to become a spirit contractor. A boy Kamito, by an accident he peeped into a girl, Clair taking a bath, and he even made a contract with spirit that she wanted. Yes, Kamio was an irregular boy spirit contractor that is impossible to exist. "You stole...my spirit...you have to take a responsibility for it!" "Huh?" "You have to become my contracted spirit" What will Kamio's destiny leads to? 

Side story to Seirei Tsukai no Blade Dance.

Terminus Est