itch.io

first, you go to the very left room in this picture.

and once you are in there, you click the doll on the bad, and there is a notebook in her arm, take it.

Once you have the notebook, go to音樂室

Then click on the circled place on the picture.then you return back to the hallway and go to room 4-0, go to the last bed and you'll see coffee cups on the table, that's the last item that you are going to search for.