This was such an intriguing visual novel! I was really intrigued at how you were able to come up with the plot, especially regarding the more sinister undertones about what Frost did to his wife and Ruby which is just heartbreaking because I can honestly see this in real life. I also enjoyed reading through Morgan's lines even though I shared Charisse's annoyance on how they explained this so vague and just basically demanded Charisse to do the opposite of what she was supposed to do, Ruby felt a bit lacking as an antagonist but the ending was quite a brain turner. SPOILERS UNDERNEATH!!!
I was curious about the ending of Morgan's Route wherein at the ending we see a photo of Charisse but she has and overshadow of someone, especially with the way her words were worded made it sound like it wasn't Charisse herself who said it. I'm thinking that the reason why Morgan was able to "get" Ruby was because the girl had already decided to possess Charisse, as seen when her shadow gets bigger and bigger through the screen, and so without Ruby there Morgan thought they had successfully captured her when in reality she had escaped by possessing Charisse (especially with the ending of the conversation between Charisse and Morgan).
I also think that instead of destroying the old things, it seems as though both Charisse and Ruby came to an agreement that the only way to "destroy" the past was to look to the future and block the past by pouring in information wherein you wouldn't need to look back on it.
And I think in Ruby's Route, Charisse met the same fate as Morgan being stuck in a burning building, though in the message I'm not sure if it was Ruby who burnt the office to silence everything (either she had been ordered by Frost or she did it out of a sick attempt to stop people from prying into Frost's "books" that he "wrote himself" and seeing evidence) or if it was someone totally unrelated.
Besides from that, I don't think Ruby is truly gone and instead both she and Charisse have merged into one which defeats Morgan's purpose, I hope they're okay somewhere and that maybe Charisse and Ruby have calmed down or something. Great visual novel! Really made me think and want to punch the everloving hell out of Frost!