Gosh, I really am excited for this one too. Honestly, the depth y'all give to the MC's of each game is really wonderful, and though Mira will probably remain my favourite protagonist, it's really nice seeing there's much more to Maia than what we saw previously. The guys seem intriguing as well - it's quite nice how different and well, human, each character is, especially when you've already done two other full games with side characters, and everyone having their own worries and motivations is amazing.
I do wonder about our fourth mystery person, though, what with the last Dreamscape and the slightly different coloured ice (which is a really nice feature, although not too apparent as I only noticed that you could click on the bracelet on the very last day.)
A few typos/things I noticed along the way:
Park intro - "Walking with no goal in mind and letting my thoughts wonder..." - "wonder" should be wander"
"It wasn't like I resembled by dad that strongly either." - "by" to "my"
"Students student" - as mentioned by another commenter?
"I'm Maia and who might you be?" - perhaps a comma after "Maia"?
"I think what miss Cosgrove is trying to say is that she's not dressed for the water." - "miss" isn't capitalized
Game scene: "//Sure//" - The in-game text doesn't pop up until after Maia has her inner monologue. The Obsidian text and RedPersephone text also pop-up both at once directly after that. (If you don't watch the Dreamscape first and choose to game instead on Monday the 15th)
Anyhow, thank you so much for releasing the demo, and hope y'all have a Happy New Year!