The pasta-loving North Italy, stalwart Germany, and timid Japan continue their misadventures through history as they reenact various events leading up to and during the Second World War. This includes the turbulent relationship between Hungary and Prussia, the War of Austrian Succession, Lithuania's early days, and the Invasion of Poland. During such tumultuous times, how will these personified nations work their way through the conflicts?

During their quest in the feudal era to recover the shards of the miraculous Shikon Jewel, Inuyasha, Kagome Higurashi, and their friends become the target of Menoumaru Hyouga—a demon awakened by one of the Shikon fragments, now in pursuit of Inuyasha's heirloom sword Tessaiga. Following a clash between the fathers of Inuyasha and Menoumaru, the weapon is the only means to restore Menoumaru his rightful family heritage. However, upon ambushing Inuyasha, Menoumaru discovers that Tessaiga's owner alone can wield it. Determined to achieve his objective regardless, he kidnaps Kagome to force Inuyasha to use his blade and release the sealed powers of the Hyouga clan. With their dependable companions' assistance, Inuyasha and Kagome oppose Menoumaru, unaware that his sinister intentions and alarming potential will endanger not only their world but also its distant future.

Three years into the war, Mahito Maki loses his mother in a tragic fire at the hospital. Shortly thereafter, his father marries Natsuko, the younger sister of Mahito's mother. They take Mahito out of Tokyo to seek refuge in his late mother's rural family home. There, Mahito is constantly taunted by a strange gray heron, who seems to have taken an interest in him. Unable to come to terms with his loss and struggling to adjust to a new life in an unfamiliar place, the boy is shocked to discover that Natsuko is pregnant. To make matters worse, the pesky heron can speak—and claims that Mahito's mother is still alive. Luring him into a mysterious tower near the residence, the heron says that Mahito can save her from death, but the boy is not easily swayed. When Natsuko disappears one day, however, Mahito watches her walk into the tower and becomes compelled to venture in to rescue her. He soon finds himself falling into another world below his, where life and death seem to be entwined. As he navigates through this foreign realm to find Natsuko, Mahito must understand what it means to live if he wants to safely return home.

In the nineteenth century, we find Lydia Carlton living in Scotland, making a living as a fairy doctor. She is one of those rare humans who can see and communicate with fairies. But no one believes her. However, Edgar is in need of someone with a vast knowledge of fairy lore, and Lydia is just that person. After rescuing her, he becomes her employer, but there are many secrets and emotions that seem to follow Edgar, who claims to be the Blue Knight's Earl.