Three adventurers—a warrior, a priest, and a young woman—traverse a land devastated by centuries of environmental calamities searching only for a way to survive. In their journeys they stumble across first the remains of a band of desperate treasure-hunters, and then the treasure they were seeking: Azec Sistra, the legendary City of the Dead. Unfortunately, the bandits responsible for slaughtering the treasure-hunters have also found their way to the city, but more worrisome still are the guardians which protect Azec Sistra from those who would violate the spirits at rest there... (Source: ANN)

Although Jirou Horikoshi's nearsightedness prevents him from ever becoming a pilot, he leaves his hometown to study aeronautical engineering at Tokyo Imperial University for one simple purpose: to design and build planes just like his hero, Italian aircraft pioneer Giovanni Battista Caproni. His arrival in the capital coincides with the Great Kanto Earthquake of 1923, during which he saves a maid serving the family of a young girl named Naoko Satomi; this disastrous event marks the beginning of over two decades of social unrest and malaise leading up to Japan's eventual surrender in World War II. For Jirou, the years leading up to the production of his infamous Mitsubishi A6M Zero fighter aircraft will test every fiber of his being. His many travels and life experiences only urge him onward⁠—even as he realizes both the role of his creations in the war and the harsh realities of his personal life. As time marches on, he must confront an impossible question: at what cost does he chase his beautiful dream?

All hope seems lost when the world is suddenly invaded by aliens. Earth's only defense is a small three-person team known as the Special Counter-Aliens Task Force, consisting of an anonymous director, the tyrannical Shiro, and the easygoing Arikawa. The luck of the Task Force improves when Arikawa finds a teenage boy lying alone on a hill. The boy, Kakashi, is humanity's only hope—he has power previously unbeknownst capable of defeating the aliens! However, without any memories and with no knowledge on how to use his power, Kakashi is left clinging to Arikawa and Shiro as well as the only remnant of his previous life: his broken cellphone. Kakashi is conflicted by the fears and emotions clouding his mind and he calls his own motivations into question. Can he overcome his doubts and internal struggles and save the world?

Shima Kawauchi was taken in by his kind grandfather following the divorce of his unloving parents. His grandfather passes away in due time, leaving Shima all alone. Consumed by grief, he cries by the oceanside at night when an accident causes him to fall into the water. Unable to swim, Shima nearly drowns but is saved by an incredibly handsome merman. Seeing Shima's emotional state, the merman—who Shima names Isaki—insists that Shima take him home until he fully recovers. However, as they settle into their space together, the two start to form a bond that transcends both species and gender.