1There are scissor marks at the top of the picture diary. Cut along the lines to make six rectangular paper sections.
They seem to be labels for the textbooks scattered about the room.

2Arranging the six paper labels properly looks like they might form a picture.

3Look closely at the labels on the textbooks scattered about the room. Each of the textbooks has a symbol on it. (For example, the Language textbook has a hidden "X.")
Try arranging the symbols in order of the labels from the mysterious paper.

4→A↑YXB

1Try looking on the table. In addition to the four utensils, you can also make out some arrows.
The utensils all appear to have been used to eat something different.

2From the mysterious paper picture diary, you can see that the parfait was eaten last.
Based on this, and the arrows on the table, figure out what order the foods were eaten in.

3Each of the foods drawn on the menu on the mysterious paper are accompanied by a symbol. (For example, the curry rice is accompanied by "A.")
Try matching each of the foods with their symbols.

4XA↓Y

1Look at the pictures on the wall. Hamburger Patty is in the fourth group, which is connected by a yellow line to matching foods. The numbers appear to show an order.

2Try examining the food in the order of the lines passing through them, starting with 1.
This would be: Curry Rice→Hamburger→Mont Blanc Cake→Hamburger Patty.

3Try matching the foods with their symbols the same way you did in the dining room.

4A←XY

1There are four photos on the wall.
The letters are too blurry to make out, but try matching them with the text at the bottom of the picture diary.
Given the number of blank spaces, you should be able to figure out which photo goes in which section of the picture diary.

2There's a long arrow underneath the text in the picture diary.
Follow the arrow and order the photos accordingly, then match the symbols on the rearranged photos.

3↑A↓B

1There are nine symbols and arrows drawn on the wall in the far back. Try using Psychometry on them.

2Try connecting the symbols in order, avoiding the ones with an X mark.

3ABXB↑

1Look at the pictures of food on the wall and try using Psychometry.
Some foods are marked with an X, and others are not. This goes for the food pictures in the other rooms as well.

2There are pictures of food drawn on the menu. Travel to each of the rooms and try putting an X on all of the marked foods.
The pictures of food in the picture diary also have X marks, so make sure not to include those as well.

3There are pictures for five food groups on the menu with two foods apiece, for a total of ten foods remaining. Display these below.
Try connecting them with lines in the same way as the papers hanging in the living room.
Make sure to keep the papers hanging in the living room in mind.

4The trick is to consider what is on the far ends of the lines you're connecting.
If you do it right, you'll make a picture.
Try to remember what you did back in the living room.

5AY↑X↓