I have a weird issue. Out of a sudden after not playing for roughly three quarters of a year the Training (2) quest (Quest No. 2) now pops up as unfinished. I have no idea why this is the case. I have already more than 130 quests finished and I've married Tsubaki already, so that doesn't make any sense.
The quest system was changed a while ago. It probably got marked wrong for you during the transition from the old to the new system, but the quest being considered unfinished has no influence on the events. You can ignore it.
I have a question so this game is massive, and I'm always on and off. Will there be a future version where you can skip the latest update with all scenes unlocked? Sometimes coming back to a new save is a hassle since again the game is so massive. Asking on android version. Amazing game though
There will probably no such feature.
If the game is not uninstalled, you can keep your progress and use the new .apk to update your game and continue with your old saves.
Sadly, copying saves from or to android doesn't work, to keep your progress that way. But on all other systems, the saves are in the www/save folder and you could keep them for later.
Something some people do is to play the game on android using joiplay. The app seems to make the game a bit laggy, but has the advantage that you use the windows version of the game, which can be updated with the "update files only" and has an open save file folder, which allows to copy&paste saves from one person or system to another.