* You can aim to pass the Japanese exam in a fun manner and in no time
* No shortage of questions and problems to solve more than 5000 question to prove yourself.
* Even if the Japanese of the problem statements is difficult, no worries we have you covered, you can learn the point of the problem in Vietnamese, English, too.

App features
* Since the ranking system is introduced, you can enjoy the fun and get a sense of accomplishment.
* Not only can you challenge each year, but you can also focus on challenges by field of Japanese language exams
* In addition, foreigners can easily study in their native language.
* A collection of quiz of general information about Okayama pref. to get you going