Adding a whole day per update would be nice but it'd either shrink down the days significantly, or increase the development time by a lot. There will be an overlength update soon, where we go through a whole chain of events back to back, but I can't say how much longer it's gonna be in comparison to the usual update length. I assume at least twice the size, though.
The lack of blood during defloration might be a tad unrealistic, but a) there isn't always visible blood during defloration and b) I'm personally not a fan of it in AVN, so I decided to just leave it out.
Her mother is coming up as a topic in the next update, yes. There was just no point in mentioning her so far. MC doesn't have too much of a reason to think about her and Mana doesn't have any news to relay regarding her mother. Until now.
Changing Machi's last name to Anzou is actually a fair point. I had completely glossed over that. I'll see about adding that for next update.
The gallery scenes (except for Inaywin's latest one, which has been fixed for next update) are in the gallery on the in-game phone. The gallery in the main menu has been deactivated for next version and will stay that way until I've reworked it - hence it not being up-to-date. I appreciate the reminder, though.
I don't mind your comments. It's always nice to see when someone's invested in the game/story. :)
Thanks! I shall deliver more soon-ish!