Note: This post
makes the assumption that Germany is Holy Rome. It hasn’t been
confirmed in canon so don’t take it as such. For more posts and evidence on
this subject, go here [x] [x] [x] [x] [x]. 

Aside from the overwhelming evidence that draws parallels
between Holy Rome and Germany (e.g., foreshadowing, mimicked dialogue, and similar
traits, behaviours, and tastes), there are also several instances in the series
that deliberately include Holy Rome and Germany in the same strip, utilizing
contexts that bridge a significant connection between the two.

There’s no explanation
I can think of that would account for why they would both be included in
these strips if not for the purpose to stress that there’s a link between them
that we have yet to learn. These don’t appear to be coincidental; there’s a
striking sense of intentionality and purpose that shouldn’t be overlooked or
waved off.

Comic Diary 7—

A series of fragmented scenes that, on a surface level appear to make no sense, but… [x]. 

Kid versions of
Chibitalia and Holy Rome “press for acknowledgment.” I’ve theorized before
that this symbolizes how both Italy and Germany have repressed memories from
their childhood.

The strip then continues with some panels covering Austria’s
annexation during WW2.

Reference to the
German Confederation. There’s a notable fixation around the vague process
of Germany’s birth. We also know that the whole idea of Germany asking about his
past is vague or misleading, as Prussia isn’t the most reliable storyteller.

Private Concert— 

The Flute. Prussia
plays the flute for Germany. He has a flashback of how sick Holy Rome became
after his dissolution [x]. 

Notice how Prussia repeats the exact same line as Holy Rome.
Unconsciously, perhaps, but it still doesn’t negate the fact that there’s a
connection and obvious repetition here. Again, I don’t think Himaruya did this for no reason.

Volume 4, Cat Festival—

Continuity. Chibitalia, Hungary, and Holy Rome wear cat ears
to participate in Belgium’s cat festival.

Cut to Austria wearing cat ears and pressuring Germany to do
so too.

Edited photo: Adult Italy and Germany (Left) and Chibitalia and Holy Rome (Right). From the same strip.