By the Queen's orders, Sebastian and Ciel head to Germany to investigate mysterious deaths that have been occurring. As the two investigate the truth behind the "Werewolf Forest," where anyone who steps foot inside is cursed to death, a terrible curse falls upon them.

Beryl Gardinant, a self-proclaimed "humble old man," is a sword instructor at his dojo in a rural, backwater village. In his younger years, he dreamed of glory as a master swordsman, but those days are long behind him. Out of the blue, he receives a visit from a famous former pupil who brings him world-shattering news—he's been appointed as a special instructor for the knights of the Liberion Order! With his life now turned upside down, Beryl travels to the capital and reunites with some of his former students: elite knights, an ace wizard, and even an adventurer who's attained the highest guild rank possible. But why do they all want his tutelage?! As far as he's concerned, they clearly don't need him anymore. Can Beryl live up to his new position? And will he ever get a moment's peace away from his adoring students?!

In the distant future, individuals who adore the old way of life live in Kowloon Walled City—a slum city that serves as a refuge for those who long for the Hong Kong of the past. Realtor Reiko Kujirai, however, craves for the new and exciting places in the area. In contrast, her only coworker, Hajime Kudou, enjoys the nostalgia the city invokes and is put off by anything modern that seeps past its walls. But despite their differing views and constant bickering on the most mundane of things, the two often find themselves enjoying each other's company. One day, a prank gone wrong leads Hajime to make an unexpected advance toward Reiko, after which he swiftly apologizes for. Baffled by his actions, Reiko starts investigating for possible explanations, only to discover a past that she has no memory of.

Fifth season of .