Chapter 517

Disclaimer
I am a casual using hacks and amateur knowledge to translate.
There's at least one line here I'm not 100% sure on. If it sounds weird / doesn't flow, that's on me. Sorry!
Please refer to Hetascanlation's work (when they get there) as the definitive translation.

Translation Notes
General:
Fonts are swapped around based on their tone/volume, so it might look random, but I'm just trying to replicate the original font choices.
Page 1:
• The hanzi China uses is 嗯, an interjection to express doubt/curiosity, surprise or agreement; or function as a groaning onomatopoeia (depending on pronunciation). The furigana beside it reads "ee" (pronounced "ehh").
• China also uses 若造 (wakazou) to refer to everyone, which is basically "younger/greenhorn (derogatory)."
Page 4:
• The sign on the door says fermé / closed in French. Why is the door sign in French but the letter(?) from the jilted lover is in Japanese...
Page 6:
• France's claim of intimate economic relations is accurate. Real-life Germany is France's lead trading partner, as its number one supplier and customer, while France is Germany's fourth-largest trading partner (behind China, the Netherlands, and the US in that order. Italy ranks in at number 6). Their economies are very intertwined, with much investment in both directions.
Page 7:
• Germany's card reads Breznritter / pretzel knight. Adorable...