Habsburg-ke no Kareinaru Junan

The Habsburgs, the most glorious family at the heart of European history, ruled the Holy Roman Empire. How did this family, once merely poor lords on the outskirts of Switzerland, rise to become emperors? —The setting is the Middle Ages. Rudolf, the head of the family, was seen as "easy to manipulate" and was elected the first member of the family to become Holy Roman Emperor. However, the princes of the empire would soon regret it. "We've chosen a terrible man!" they would exclaim… A grand historical comedy that will make you knowledgeable about history!

(Source: Kodansha, translated)