*Overview An application to remember sousyo. There are up to 16 levels. After testing in All mode, we will iterate learning repeatedly in incorrect answer mode. Finally you can check if you learned completely in challenge mode. Those which you could not memorize are remembered in incorrect problem mode. *How to use *All mode The questions are presented in the same order every time. Please tap the same kanji as above Sousyo. It is 4 choices. In case of correct answer, ○ is displayed. In case