【PC+Ty+ONS+安卓直装】秽翼的尤斯蒂娅｜脏翅膀｜Aiyoku no Eustia

悲劇は往々にして不条理なものだが、これほど不条理という形容がしっくりくる悲劇もなかった。

その日、この都市の一角が多くの人命と共に大地へと崩落した。

性別、年齢、人間性、地位、経済力……

犠牲者に一切の区別はなく、ただそこにいたという一事だけが、彼らの命を奪った。

なぜ死なねばならなかったのか。

無数の死に何の意味があったのか。

答えはなく、残された人々に与えられたのは、輪郭のない茫洋たる喪失感だけだった。

後に “大崩落（グラン・フォルテ）” と呼ばれる悲劇だ。

あれからずっと、この都市 『ノーヴァス・アイテル』には不条理の雨が降り烟っている。

上層から下層へと、都市を濡らした水は低きへ流れ、やがて牢獄に聚まり澱む。

嵩を増す汚水を取り除く術もないまま、囚人たちはただ喘ぐ。

いつの日か、この都市に陽が差す時が来るのだろうか。

Five hundred years ago, angered by humanity's sins and arrogance, God recalled his Angels from Earth and the surface was consumed by Chaos. The last person who still prayed to God, the first Saint Irene, asked for his forgiveness. God listened to her prayers and lifted the city and land around her to save humanity from extinction. As the last bastion of humanity, the city of Novus Aether floats in the sky above the inhospitable surface, powered by the daily prayers of the Saint. More than a decade ago, due to the interruption of the prayer, the "Gran Forte" occurred, causing part of the city to fall to the surface and splitting the lower city in two.

In time, the lowest layer became the dwelling of all kinds of low-lives, people who lost much of their former lives during the "Gran Forte," becoming known as the "Prison." However, a contagious disease that causes people to grow wings has spread throughout the city. A special unit has been formed to deal with these people swiftly.

In this "Prison" resides Caim Astraea, a freelance ex-assassin who does odd jobs for his friends for money, refusing jobs that require him to kill people. During one request, Caim finds a girl who contracts the wing-disease, enveloped in a light that reminds Caim of the "Gran Forte" years ago...