http://www.coindesk.com/tokyo-court-bitcoin-not-subject-to-ownership-2/
According to [this reddit comment](https://www.reddit.com/r/Bitcoin/comments/3fztzt/tokyo_court_bitcoin_not_subject_to_ownership/cttk8f8), the ruling was probably mangled by going through two reporters who did not quite understand it, with a Japanese-to-English translation to boot.
That guy's explanation seems to make sense: what the judge probably ruled is that bitcoins are fungible, so that plaintiff cannot claim ownership of certain particular 458 bitcoins that are in the MtGOX estate, or even of 485 generic bitcoins. The plaintiff can only lay a claim to the value of those bitcoins, according to some etablished price. Therefoer the trustee could continue the normal process of gathering all assets and all claims, converting all to JPY, and dividing the former proportionally to the latter