[How to play]
Solve all the mysteries written in the diary!
When you have solved all of the month, tap the next month's sticky note to challenge the sorting problem!
If you answer the correct sort, you can solve the mystery of the next month!
Let's do our best to answer all questions correctly!


1. The total number of questions is 90!
There are a lot of varieties of problems!
The problem gets harder as you progress through the game!
Up to 365 questions will be added in the update!

2. If you answer the question correctly, you will receive “keywords”!
Keywords are needed to sort issues for the next month!

3. Use tips and notes when you don't understand a problem!
There is also a hint for sorting

4. If you still don't understand, click the “Look at” button to display the answer!




[Provided]
Music-Note.jp: http://www.music-note.jp/
Music is VFR: http://musicisvfr.com
Pocket Sound: http://pocket-se.info/
icons8: https://icons8.com/
Pita Material Museum