I really like the minimalistic approach on your design here! Simple color change on the background informing the contents are from different character with different perspective and characteristics, really effective!
I do feel like the choices are not very populated since a lot of the pages are only having one option. But i do like the idea of hiding the effect of the choices until later so they cannot be traced back easily and change.
I also get a very strong feeling of reading a text converted from a book, both good and bad. It felt very formal and the writing are great, but sometimes i feel like i am not interacting that much apart from the major choice.
But i love the frequent switching of perspective in the narrative as the player go through each character's mind and try to affect each other's relationship and feeling!