I don't have time to post all my theories now, but there's one thing Yamamoto tweeted that drew my attention and I don't see anyone else talking about it. I want to point it out because it implies Kusaka's doing something I kinda thought he would do and wanted him to do, and even considered starting an online petition, but didn't have much time and decided it wasn't worthy it. But that he might doing anyway.
https://twitter.com/satoshi_swalot/status/1189432398015942656
Yamamoto said he has finished the cover illustration for the new arc and talked about "Tatezō-kun" and "Hokko-chan", noting they are pseudonyms for the characters. Someone asked if they are "Sword-kun and Shield-chan", and Yamamoto once again said "Tatezō-kun (pseudonym) and Hokko-chan (pseudonym)".
At first glance, that doesn't seem like anything relevant. They're names derived from words for "sword" and "shield". "-zō" is a suffix used in male names, and usually means "three" and "-ko" is a suffix used in female names, and means "child". Nothing unusual, right?
But here's the thing, "tate" (盾) means "shield" and "hō/hou" (鋒) means "dagger; sword's point". The male name is the one derived from "shield" and the female name is the one derived from "sword".
In other words, Yamamoto seems to be implying that, contrary to what everyone expects and literally every precedent in this manga,
Sword is going to be the girl and Shield is going to be the boy.
If that is correct, there's a chance the girl is the protagonist this name. And if they are going to avert the usual naming pattern, then that puts into question the Starter rotation cycle as well. Could
the girl be the one with Sobble and
the boy the one with Scorbunny?
I had a similar theory as far back as the Treehouse live stream when it was shown "A Bag of Potatoes" as an item. Specifically, my theory was that one of the protagonists is going to be the other's hired chef.
Though, for Alcremie, I actually want Hop to it because its Japanese name is Ma
hoipu. However, considering Alcremie has multiple flavors, it's likely going to be owned by multiple characters.