Fixed minor bugs.
Two-kanji idioms, Niji-jyukugo, will increase your Japanese vocabulary to remember its synonyms and antonym.
When you write a sentence in Japanese, a lot of synonyms (words represent the same meaning) are very useful for you.
Antonyms, the power to explain things from the opposite side, will be a shortcut to successfully express what you want to say.
This app has a lot of synonyms and antonyms of two-kanji idioms for Japanese beginner.
Enjoy!
# Japanese only
