Willem Kmetsch wakes up from his icy slumber as the last surviving Emnetwiht, a race of humans that populated the planet’s surface until they met their untimely demise five centuries ago at the hands of "Beasts." Currently, he lives among the hundred odd floating islands that make up civilization—otherwise inhabited by various other species, all of whom possess distinct animal-like features such as horns, fangs, wings, and scales. Because he lacks any such feature, Willem is referred to as a "markless." One day, Willem encounters another markless named Ctholly Nota Seniorious. He thinks nothing of the meeting, and continues to spend his days working odd jobs until he runs into her again, this time after accepting a military posting. Willem soon learns that the group of bubbly young Leprechauns he is tasked to look after are pivotal in the ongoing battle against the Beasts. These girls, who have had little exposure outside a world where they are treated as weapons, are willing to die if it means defeating the Beasts. Determined to nurture a life of normalcy for them, Willem soon becomes a father figure to the girls. Just like how he once went off to battle, he must now come to terms with watching these children go off to war. [Written by MAL Rewrite]

It's been five years since the battle at Corna di Luce on Sky Island 11 and the situation has gotten worse. 5 years ago, about two days after the battle at Corna di Luce on Sky Island 11, the Elpis Mercantile Federation accidentally lost control and released two beasts, Materno: The Fifth Beast Who Spreads Widely and Croyance: The Eleventh Beast Who Remains Rooted both onto Sky Islands 13 and 39 respectively. The result was catastrophic. In the end, both Sky Islands fell to the Beasts and many lives including those of the Elpis Mercantile Federation were lost. 5 years later, Feodor Jessman, a young 4th Grade Officer whose step-brother was at the head of the Elpis Mercantile Federation attacks, spends his days training on Sky Island 38, hoping to climb up the ranks of the Guardian Wings Military to achieve a mysterious goal. One day, while skipping training to buy some doughnuts, he meets a young Leprechaun girl named "Tiat Siba Ignareo" who mysteriously asks him to forget her after a brief conversation. The next day, Feodor is assigned to be the caretaker of visitors from Sky Island 11. As the group arrives, Feodor is surprised to see Tiat among them, along with Lakhesh Nyx Seniorious, Collon Rin Purgatorio and Pannibal Nox Katena. Little do the two know, their meeting will change the very fate of the Sky Islands; as Sky Island 38 is set to be attacked by Croyance who is steadily approaching the island in Sky Island 39 even now; and a secret conspiracy lurks in the depths of the Guardian Wings Military. (Source: SukaSuka Wiki)

Shūmatsu nani shitemasu ka? Isogashii desu ka? Sukutte moratte ii desu ka? (終末なにしてますか? 忙しいですか? 救ってもらっていいですか?, litt. « Que faites-vous à la fin ? Êtes-vous occupé ? Voulez-vous nous sauver ? »), abrégé Sukasuka, est une série japonaise de light novel écrite par Akira Kareno et illustrée par Ue. Cinq volumes ont été publiés par l'éditeur Kadokawa entre novembre 2014 et avril 2016.