Karl Wagner is a disgruntled middle-aged instructor at the Bundeswehr Command and Staff College. He finds himself concerned about the direction which the German nation is headed in—just as he is killed by a terrorist attack. Only to awaken and find himself reborn as an infant, Bruno von Zehntner, the youngest son of a noble family renowned for its part in the German war industry a few years after the founding of the German Empire. Bruno, as he is now known, desires to rewrite history and ensure the German Empire emerges victorious in the coming century. And in doing so, finds himself entrenched in a world filled with Blood and Iron!
Bruno had more or less entertained the Japanese aristocracy for the night, or at the very least, the Royal Family of the Eastern Empire.
Sakura, of course, was very angry with Bruno for not immediately recognizing her and had stormed off to her room to write a series of angry letters, venting her frustrations to her pen pals, who just so happened to be the other princesses with whom Bruno was acquainted.
It wasn't all too surprising that these young women all knew each other. After all, the German Reich, Austro-Hungarian Empire, Russian Empire, and the Empire of Japan were in a military alliance with one another at the moment.
To say that there was at least one opportunity over the past few years for them all to meet up together and hit it off was an understatement. Diplomacy was an important part of a monarch's duties, and oftentimes it was conducted in person, over dinner, with one's family.