So as someone that has played the game for around 70+ hours (yes, 40+ hr one was just half the bucket), reverse engineered the game to figure out how to forcefully go back to "bug" version to go back to new game plus+, and a bunch of other stuff, I'll try to answer most of the questions here.
1. Affection = love for main character = stuff that makes her happy, surrender a.k.a. ntr is value for the ntr guy(forgot his name). Both value cannot be decreased in any way, only increase
2. Kano will do something every hour, call her beforehand and ask her for what she is going to do next hr. She will tell you on a walk, park, river, do investigative work, playing games at home, or bathhouse.
3. There's set time for certain events to occur, says that in the recollection room.
4. Idk about that, never used this feature nor did I bother with it, think there's a help tab for the controls in the help app on the phone.
5. If your talking about the dungeons, monsters doesn't trigger h-scenes and only the orange one is special, the rest are just different colors for different mob type. Purple=door blocker, black=mob, blue=mob:?
6. 4/5 in full version, brute force unlock doesn't work. (Tried that

)
So I'm assuming why you probably mention this is because you don't understand the language too well. Like I mentioned above, certain events happen during certain times. Somewhat randomized for some common events like park and stuff, which is good imo. The game also tells you that starting the weekend, the ntr guy doesn't show up at all until Sunday night. Food wise during my gameplay, she would always eat at cafe, which I assume is probably due to cash at hand(?) since she never eats at the ramen shop, or probably some other factors that I don't know. Either way, you can call her and tell her where you want to eat before the dinner time. Exorcism stuff is more about watching heartbeat, which I mentioned IN MY GUIDE on the game in my wip walkthrough(link to it in the header thread).