The title must contain at least four words. Possibly now the question must contain at least four words as well. It is possible that the Forum does not recognize Japanese as being individual words.
Historically there have been very few questions asked in Japanese that have been answered in Japanese. It is recommended that you post an English translation of the question as well. There is no restriction in the policies against using languages other than English, but most of the active volunteers are English or prefer to answer in English, so your question would reach the widest audience if it is in English.
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