This application contains onomatotoeia words that are often used in daily life, such as "peko-peko", "kira-kira", and "doki-doki".
This application contains "Yojijukugo" (Japanese four character idiomatic compounds) more than 7,000.
Completely free, with no time limit, and you can try again and again if you make a mistake.
Well, how many "Yojijukugo" can you answer correctly in a month?
If you have achieved over 1,000 words and you are amazing.