1/3
26 Days of Service
I'm surprised that you can play the game, many of the pictures aren't translated yet, doesn't that bother you?I have to admit I definitely don't get the game completely yet, but I somehow got all hearts for auntie and sis by basically farming their rep, buying specific "important" items from the store (store onee-chan a besto btw!) and getting the skill that allows you to stay up at night. This latter thing is very important because some events can only be triggered at night.
For example, I believe this poster
is stuck at a night event with the aunt. Some events also trigger on certain days, like the horror story night event. You also need the "important" items from the store to unlock events with auntie and sis which in turn unlock new lewd positions.
I am still not sure how all this works but by using this approach I managed to get all the hearts for all girls except for the very last heart for the farmer girl.
Also, after the Summer ends you have the option to restart the game while keeping all of your progress, so you don't have to worry about missing out on something because you're on a time limit.