I don't have too many specific thoughts, but I can say I liked the general friendly fluff of people hanging out.

Particularly since hS dropped his new Multiversal Atlas, which had some mentions of the 2012 invasion of the Prime Multiverse's International Academy of Hetalia Fanfiction by its Mirror Multiverse counterpart. Part Three covers Christianne and Eledhwen's actions during IAHF2, when this was all developing, and Part Four covers, very quickly, how IAHF2 should've ended had I not gotten distracted by other fandoms. :P

Adding to continuity (at least, my corner of it):

• Collapsing Word Worlds return to a null-space, void-like state of being. This was also seen in Rosie and Nenya's mission "The Dark of the Moon", and briefly alluded to by Jay in "Lady of the Fellowship" when she mentioned getting stuck in a "timeless abyss" if they get lost between dimensions.
• The Division of Applied-and-theoretical Multiversal Physics in HST 2012 was in a storage closet in the DMSE&R labs.
• There is a very old couch in the DMSE&R labs that Christianne thinks could've been around since the late seventies, but since that predates even Makes-Things arriving in HQ (and is, in fact, probably during the Civil War on Origin), she's probably exaggerating.
• Dr Horatio Graves is one of the first members of DAMP. I picture him looking a bit like the dad from Jordan Peele's Us, which makes him getting stuffed into a tiny storage closet (Winston Duke is 6'5") even funnier.
• Confirmation that Christianne and Eledhwen have, in fact, been getting therapy! With Jenni Robinson and Mirrad, respectively! Thanks, Nesh, for looking over their lines and helping me work out those scenes.
• There's a variant of Witness Protection offered, presumably, to people like OFU Course Coordinators on the run. Its acronyms are, funnily enough, CPP. They have absolutely no relation to the other CPP. I think.
• Agents Baklava, Jam, and Meringue from IAHF2 have names! Baklava is Melody Hearth, cousin of Nurse Carleton Hearth, Jam is James Abadie, and Meringue is Hannah Rothberg.
• ...And Part 4 talks very briefly about how that Merge between the IAHFs was averted. Turns out in 2012 I was aware of the parodies and stuff of IAHF and was planning to use them in the Grand Finale! Yeah.

So that's pretty much what Eledhwen and Christianne were up to before they started specialising in BBC Sherlock and defeating meatloaf monsters. I'm going to continue going through unfinished missions and finishing them up, too, so I guess this isn't the last time you'll hear from E and C.

I fully admit I got basically none of the byplay, but I was happy to just let the story wash over me. The food descriptions were good for that, actually - makes it feel much more slice-of-life. Ditto the many and varied forms of names; it makes it feel like I don't have to try to follow, it will happen regardless.

I am not at all sure how Agent hS managed to get a foodstuff named after him, though. O.o

hS