Last question. Is it worth playing all the routes?
I'd say it is worth it to play at least twice. There's no definite "route" but every playthrough will most likely have a lot of little differences since you'll be making different decisions. Some people in the Discord have even played the demo more than 3 times. While there are a few different endings, things can also go slightly differently every game month since players have control of their schedule and responses to quests.