I've been thinking about the notebook in the room Sensei and Nao-chan find behind the mysterious door in "Flora" and want to throw out an idea. For reference:
As others have pointed out, this looks like a report on a scientific experiment or observation study. To me, though, it doesn't sound like it's describing the residents of Kumon-mi. The girls already have fine "senses of individuality" at the start of the game, most of them are aren't very ambitious (I guess some, but not all, are ambitious of Sensei's love), and most of them aren't aware of any impending tragedy (uncertain or otherwise).
As an alternative, could it be describing the gods/USERs? The trinity apparently were once aspects of a single entity, and have become more distinct over time; HOPE and Pareidolia are clearly ambitious, Wires maybe not so much; and the gods seem aware that something might be going wrong with the world/resets, e.g. the Wishing Well drying up.
I don't know who would be observing the gods or why, but it reminds me of how the Xoanon says Sensei isn't a protagonist or even a piece of the puzzle, and rhetorically asks who the gods themselves worship.
Two other random notes from this room:
The chart on the wall has the same symbols as the monoliths from Sekai's restoration, which apparently are a kind of eye chart used in Japan (
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The renders of the room, but not the rest of the event, are labelled as "yg48z9d11frtd". Possibly a cipher of some sort, but I don't think any of the ones we've seen elsewhere in the game would have numbers.