I read this over dinner today, it's super cool! I understand you didn't draw the illustrations yourself but the composition and design is very good, everything is laid out very well. To be honest I don't play games like this but I do like to read them, and this is really interesting, especially all the Yokais. I like how the character creation page is all in-universe like you are filling out a form for the scientists about yourself, that's a great idea.