filtering out non-Japanese

Dear all,

I have a long text ostensibly in utf-8, and I would like to get rid of 
all the lines that contain anything BUT kanji, katakana or hiragana 
(thus, throwing away Latin, but also digits, punctuation, etc.)

In short, I would like to do something like:

perl -ne 'if (/[^\p{Hiragana}\p{Katakana}\p{Kanji}]/){print}' 
webcorpus.tok > webcorpus.clean.tok

Is is possible to do something like that?

Thanks a lot!

Marco