Last day info update, cool
Chara design wise, NewHu's clothes are very reminiscent of sanctuary associated Youkai like Biten and Nemuno, and her putting her fists up means she's probably one of those rowdy types of youkai. Be that as it may, Alolan Nemuno dangerously looks like she could be a bottom-150-of-the-popularity-poll material, I hope she's gonna have something going on for her, despite being early stage. Also why do I feel like she'd handle a mean trident
Anyway, her color scheme + the pretty ammonite seashell thingy in the picture may hint that the sea could indeed be of relevance this time :
For example, we have
CoLA's chapter 15, where the fossil that the gang discusses was found by Reimu in the middle of a bunch of shellfish fossils, and that in the depth of the mountains (which could only be youkai mountain), while in OSP's chapter 9 (yes, the 3 fairies manga do have lore) where the girls are fascinated by the illusion of a City that's generated by a clam Youkai, Aya claims that the land was entirely covered in water, plus there being about 130+ years since Gensokyo and a certain Otherworld got split apart ...
Touhou usually associates the moon with the Sea, be it with Toyohime's ability to link the seas and the mountains, or even the mythical Dragon Palace actually being the Lunar Capital (CiLR). Add to that the previous Seiran - Biten TH19 dialogue about the Sanctuary serving as a passageway of sorts that's linked with the Lunar Capital, I think it may be worth it to put some stocks on the Moonies being of relevance again this time. A different location would be cool too, though, dunno how we will go forward if we have a direct moon passageway that's readily available in the backyard if the connection with the Lunar Capital turns out to be legit.
So yeah, for now it's probably gonna be at least Story Stones (probs Izanagi Objects) + sea theme, so kinda curious about what the real threat is gonna be this time ...