Was originally going to write a long review about how this game differs from Subahibi but after somehow being able to finish Kotomi route and reading half into the Zakuro route, I have no energy to read this because I'm not interested anymore.

Yeah I know what happens in Yasuko view and I couldn't care less. I get why Scaji remade Tsui no Sora from groundup while writing Subahibi. This game doesn't have anything that made Subahibi interesting. ANYTHING. Even the new additions don't help.

So I'll only share my notes on Philosophical, scientific and religious, references and quotes mentioned in the game:

The books and topics Yukito and Ayana talk about:
- https://en.wikipedia.org/wiki/Critique_of_Pure_Reason
- https://www.gutenberg.org/files/2529/2529-h/2529-h.htm
- https://www.gutenberg.org/files/52821/52821-h/52821-h.htm
- https://en.wikipedia.org/wiki/Antinomy
- https://en.wikipedia.org/wiki/Tractatus_Logico-Philosophicus
- https://en.wikipedia.org/wiki/Uniformitarianism

Yukito's monologue about ending of this movie, pretty cool btw would recommend watching:
- https://letterboxd.com/film/wittgenstein/
-https://www.youtube.com/watch?v=7TM0zA2_5UE

32-37 of this is the starting phrase of Dostoevsky's Demons, and mentioned in the game by either Ayana or Yukito. Can't remember which.
- https://www.churchofjesuschrist.org/study/scriptures/nt/luke/8?lang=eng
- https://en.wikipedia.org/wiki/Demons_(Dostoevsky_novel)

Ayana talks about this book, fun fact; this book was written years after the time the game set in. And also is about Octopuses. Totally not Cthulhu or Yog-Sothoth:
- https://en.wikipedia.org/wiki/Other_Minds:_The_Octopus,_the_Sea,_and_the_Deep_Origins_of_Consciousness

Can't remember what these were about but Ayana and Yukito had a talk about these:
- https://en.wikipedia.org/wiki/Perennial_philosophy
- https://en.wikipedia.org/wiki/Mind%E2%80%93body_dualism
- https://en.wikipedia.org/wiki/Mind%E2%80%93body_problem

One of Takuji's rants with Kotomi mention this:
- https://ja.wikipedia.org/wiki/%E6%B3%95%E8%8F%AF%E4%B8%83%E5%96%A9

Oh also Ayana is 'revealed' to be Yog-Sothoth and the Mahou Shoujo Riruru, like how it was implied in the Subahibi. I say 'revealed' because just like everything this has chance of being a Red Herring but I don't care.

I don't want to read a boring story because it has interesting Philosophical topics in it.