There are 3 white stars that represent saves located in the Castle Town Entrance, the Front of the Village, the Graveyard, Yoki's journal at her house, and the forset near the lost traveler.
There are 3 white stars that you could find in the Castle town entrance, The front of the Village, Yoki's journal in her home, in the forest near the lost traveler, and in the grave yard. Those are areas you can save in.
