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| Aiyoku no Eustia | |
 Aiyoku no Eustia box art | |
| 穢翼のユースティア (Aiyoku no Yūsutia) | |
|---|---|
| Genre | Action,Drama,Romance,Supernatural |
| Video game | |
| Developer | August |
| Publisher | Hazuki (Windows) Dramatic Create (PS Vita) ENTERGRAM (Switch, PS4) |
| Genre | Eroge,Visual novel |
| Platform | Windows,PlayStation Vita |
| Released | April 28, 2011 (Windows) June 26, 2014 (PS Vita) June 23, 2022 (Switch, PS4) |
| Novel series | |
| Written by | Sasa Miyachiruda |
| Published by | Harvest |
| Demographic | Male |
| Original run | November 25, 2011 –June 20, 2012 |
| Volumes | 5 |
| Audio drama | |
| Produced by | Geneon Universal |
| Original run | October 26, 2011 –August 10, 2012 |
| Episodes | 6 |
| Novel | |
| Aiyoku no Eustia: Auld Lang Syne | |
| Written by | Okita Kazuhiko |
| Published by | Paradigm |
| Demographic | Male |
| Published | December 22, 2011 |
| Manga | |
| Written by | August |
| Illustrated by | Monaco Sena |
| Published by | Kadokawa Shoten |
| Magazine | Comp Ace |
| Demographic | Seinen |
| Original run | June 2012 –August 2013 |
| Volumes | 2 |
Aiyoku no Eustia (穢翼のユースティア,Aiyoku no Yūsutia, lit. "Eustia of the Tarnished Wings") is a Japaneseadultvisual novel developed byAugust forWindows and was released on April 28, 2011.Aiyoku no Eustia is August's eighth game, preceded byFortune Arterial andYoake Mae yori Ruriiro na: Moonlight Cradle. It was planned to be released on March 25, but the schedule was changed due to theGreat East Japan earthquake. An enhanced port for thePlayStation Vita titledAiyoku no Eustia: Angel's Blessing was released on June 26, 2014.[1] The game was released exclusively in Japan for theNintendo Switch andPlayStation 4 on June 23, 2022. Two manga volumes based onAiyoku no Eustia were published byKadokawa Shoten. Novels, comic anthologies and drama CD's have also been released.
The title is a play on words: the actual Kanji used areai (穢, dirty) andyoku (翼, wing), rendering the primary meaning of "Eustia of the Tarnished Wings". However,aiyoku is a homonym in Japanese, and also means "worldly passion" or "lust" (愛欲). Accordingly, the alternate reading is "Eustia of Passion", which is an allusion to events within the game.
After the surface of the world succumbed to chaos centuries ago, the city of "Novus Aither" (ノーヴァス アイテル,Novasu Aiteru) is kept afloat in the sky solely by the continual prayers offered by the Saint.[2] Years ago, when the Saint's prayer was interrupted, an incident known as the "Gran Forte" occurred, causing a portion of the land to fall and split the lower city into two, separated by a cliff. Countless lives and property were lost or irreversibly affected in what would be known as the greatest disaster in the city's history.
In time, the lowest layer, known as the "Prison", became the home to people who lost much of their former lives during the "Gran Forte". Crime, famine, and disease run rampant, with "The Noncorroding Gold Chains", the ruling organization in the area specializing in the sex trade, keeping what little order that still exists. Meanwhile, a contagious disease which causes the infected to grow wings has spread throughout the city, and a unit commonly known as the "Wing Hunters" has been formed to deal with these people swiftly and often violently.
In this "Prison" resides Caim Astraea, a freelance ex-assassin who does odd jobs for his friend, the head of "The Noncorroding Gold Chains", for money. During one request, Caim finds Eustia, a winged girl who emits the pale purple light characteristic of the "Gran Forte" incident years ago. His encounter with Eustia will take him on a journey which will involve him with the most influential bodies of the city, including the Church and the royal government. As he searches for the meaning to his cruel, difficult life, he will discover the deepest and darkest secrets of Novus Aither.
A manga adaptation entitledAiyoku no Eustia was published byKadokawa Shoten in June 2012. The manga was written by August, and illustrated by Monaco Sena. It began serialization in an issue of theComp Ace magazine. Two volumes have been produced. The manga series originally ran from June 2012 to August 2013.Ichijinsha has published anAiyoku no EustiaComic Anthology, which was released on July 25, 2011.
Harvest has publicized anAiyoku no Eustia novel series, consisting of five volumes written by Sasa Miyachiruda. Each volume focuses on a different heroine's scenario. The first volume,Aiyoku no Eustia Kuroki Hane was published on November 25, 2011,[4] the second volume,Aiyoku no Eustia Aoki Tsuki, was published on December 20, 2011.[5] The third volume,Aiyoku no Eustia Shiroki Seijo, was published on February 2, 2012,[6] and the two final volumes,Aiyoku no Eustia Kin'iro no Ōjo,[7] andAiyoku no Eustia Konton no Tenshi,[8] were published on March 25, 2012, and June 20, 2012. A novel entitledAiyoku no Eustia Auld Lang Syne, written by Okita Kazuhiko, was published byParadigm on December 22, 2011.[9]
Geneon Universal has released anaudio drama series forAiyoku no Eustia, containing six chapters, the first chapter was released on October 26, 2011, and the last chapter was released on August 10, 2012. The scenario was supervised by August staff, with each chapter focusing on the past of various characters in the story.
Aiyoku no Eustia is August's eighth project, which was developed after other August games such asYoake Mae yori Ruriiro na andFortune Arterial. The scenario forAiyoku no Eustia was written by Taku Sakakibara.[10] The art and character designs were handled by Bekkankō.[10] The movie production was managed by Yuki Kitagawa, and the music was managed by a music production company called Active Planets.
On December 24, 2010, the first trial edition,Aiyoku no Eustia - Tech Gian Super Prelude, was made available on platformWindows, with an age rating of 15+. Two other trials were released inJapan also, one on December 28, 2010, and the other on January 14, 2011, the age rating changed to 17+. On April 28, 2011, the first press edition was released, followed by a regular edition forAiyoku no Eustia, which was made available on Windows in the same year, July 29. Both shared an age rating of 18+.Aiyoku no Eustia: Angel's Blessing was released forPlayStation Vita on June 26, 2014.
Two maxi singles were released for the opening and ending themes on April 28, 2011. The first contained the opening theme "Asphodelus" (アスフォデルス) byCeui and the insert song "Tears of Hope" (ティアズ・オブ・ホープ). The second one contained the ending theme "Shinainaru Sekai e" (親愛なる世界へ) by Ceui and the insert song "Close My Eyes" (クローズ・マイ・アイズ) by Ami Fujisaki.
Famitsu gave the PlayStation Vita version of the game a review score of 29/40.[11]