Thank you for the replay. It's really nice to get some feedback on my work.
First regarding Mao route, I did consider adding a route for her, but time just didn't allow it. By the time I finished those five routes I was already twice over the time I was originally planing to devote to making this VN (I worked on it for 13 months and had originally planed to make it in 6). I also considered doing something a long the lines of DLC routes for Mao, Nene and a new character later on, but sales don't justify to do that now. Maybe someday in a future if I ever decide to do a full remaster... maybe...
As for the story,
In the world of this VN the more one advances spiritually the more one is intelligent, emotional, reasonable/sane, conscious, pretty much everything, and the opposite is also true, so yea the ones who have accepted a virus have so low of any of those that that they are beyond hope and just something to be extinguished witch is clearly understood by characters and the reason why they treat them as such. In this world there are only two possibilities for a future, advance and reach Godhood or case to exist, and virus embraced ones that have descended to such low levels that they have no chance of ever reaching Godhood and could as well not exist as it's only a matter of time before they do stop existing completely (True they already have so low consciousnesses that they current state could barely even be considered existing/living) and during that time they cannot contribute to anything, just destroy and taint everything they touch . They represent the worst of humanity but not in some subjective moral god or evil way more in an being small, pity, way, as if people who are only alive on the outside but completely and permanently dead inside and whatever they do they do mostly instinctively, making a world a worse place just by being in it. This VN doesn't really work in good and evil format, if anything advancing and becoming more is good doing the opposite is bad, everything else just is. All in Astral aiming to reach Godhood, become creators of worlds, are beyond such concepts of good and evil, black and white.
PS: In Mao's case, broken grammar was intentional, that's just the way she talks. I'm glad you liked it.