Well, I have doubts that japanese people will really want to play, speculating on Bitcoin.
We have a big handicap here (I live in Tokyo) : MtGox. Everybody think that MtGox = Bitcoin so Bitcoin = dangerous.
Japanese people love new technologies, but without a very heavy "back up" from a very big Japanese company, Bitcoin will have a hard time being trusted. I hope Rakuten will change that !
I don't think exchanges in here has 0 fees on transactions.
I'll try Kraken later, but for the moment the BTC/JPY pair has 0￥ volume. Even if I was really disappointed on Kraken decision to delete the DOGE/EUR pair which had ~1500$/day volume.
I think the sentiment has been changed recently since there are some positive opinions on twitter and news.
For Twitter:
#ビットコインPeople are trying to explain the technology behind Bitcoin.
http://www.digitalmoney.or.jp/wp-content/uploads/2014/10/20141003_BTC2.0.pdfSome politicians (congressman) start publicly discuss about future applications of Bitcion.
http://www.taro.org/2014/10/post-1543.php For News:
楽天グループも導入､復活するビットコイン (Adoption of Rakuten Group, Revival of Bitcoin)