Are you sure? I read that any production or distribution of CP is illegal, but that mere possession is not illegal. Here is a recent article about it:
The Japan Times said:"What about the simple possession of child pornography, say, downloaded from the Internet?
International and Japanese human rights activists, as well as the United Nations and the United States, have repeatedly said this loophole remains the fundamental flaw in Japan's efforts to go after child pornographers.
Production and distribution of child pornography is illegal, but simple possession is not (and that term can be very difficult to define, legally). A U.S. State Department human rights report released in February notes that the absence of a statutory basis makes it difficult for police to obtain search warrants. "
Possession of child pornography is not illegal in Japan.
Source: h**p://www.interpol.int/Public/Children/SexualAbuse/NationalLaws/csaJapan.asp
Using P2P to access child pornography is illegal since it would be distribution.
P.S.
Rather than talking out of your *ss just Google it people!! Sorry but it just had to be said.
And because the intent can be verified only by the act of distribution, mere possession is not illegal.I would add that possession is not illegal only if there is no intent to distribute it.
児童ポルノ法改正は困難 与野党に溝、協議進まず
児童ポルノの拡散防止を強化する児童買春・ポルノ禁止法改正の今国会での実現が困難な情勢となっている。与野党双方の改正案は国会に出そろったが、互いの案を激しく批判し合って歩み寄る気配がみられず、協議は全く進んでいない。
個人が趣味で持つ「単純所持」を禁止しないのは、主要8カ国(G8)で日本とロシアだけ。このため与党は昨年6月、単純所持を一律に禁止した上で、性的好奇心を満たす目的の所持には罰則を科す改正案を衆院に提出した。一方、民主党は単純所持の一律禁止は「恣意(しい)的な捜査につながりかねない」と批判。児童ポルノを買うか、何度も繰り返し取得した場合に適用する「取得罪」創設を柱とする改正案を今年3月に衆院に提出した。
民主党案に対し、与党内からは「法改正の出発点はあくまで単純所持の禁止。民主党案では改正の意味がない」(自民党ベテラン)との批判が続出し、接点を見いだすのは難しいとの意見が大勢を占めた。
与党は民主党に参考人聴取を打診したが、民主党は拒否して修正協議を逆提案するなど強硬姿勢を崩していない。
2009/05/09 16:36 【共同通信】
Child Pornography Law Revision in Trouble: Gulf Between Ruling and Opposition Parties, Deliberations Stalled
Prospects for a revision of the Child Prostitution and Child Pornography Law to further prevent the spread of child pornography are shaky. Both the ruling coalition and opposition parties have set forth their respective proposals, but each side strongly criticizes the other's proposal, there is no sign that they are nearing compromise, and deliberations have come to a complete stop.
Of the G8 nations, only Japan and Russia do not forbid individuals from simply possessing child pornography for their own interest. For this reason, in June of last year, the ruling coalition introduced a proposal to the Lower House of the Diet that would revise the law to include an across-the-board ban on simple possession and create criminal penalties for those who possess [child pornography] for the purpose of sexual curiosity. On the other side, the Democratic Party has criticized an across-the-board ban, saying "It could lead to arbitrary investigations." In March of this year, they proposed a revision in the Lower House whose centerpiece is the definition of a "crime of acquisition," which would be the purchasing or repeated acquisition [of child pornography].
One Liberal Democratic Party veteran said of the Democratic Party's proposal, "The banning of simple possession is the starting point of any revision. The Democratic Party's proposal is meaningless." Others expressed similar opinions, and most said that it would be hard to find common ground.
The ruling coalition proposed hearings on the subject to the Democratic Party, but the Democrat Party rejected the proposal, making a counter-proposal to hold deliberations on amendment, and showing no sign of relaxing their stance.
2009/05/09 16:36 Kyodo Tsushin News Service
What's not clear is the punishment for acquiring CP. It may be legal to possess it, but obviously to possess it there must have been an act of acquisition, probably downloading it from the internet. If it was acquired through p2p networks, the file may have been partially uploaded during its download time (distribution). If it was downloaded from a pay-site, this is illegal (purchase). So I assume that the law allows for the download of images from free sites where the possibility of simultaneous upload did not exist.
The law is pretty clear, actually. Direct download=OK; p2p/torrent=not OK. The irony is that part of the concept behind p2p/torrenting is to get around copyright laws by dispersing responsibility. But under Japanese law, if you transmit CP at all, they can nail you. Arguing that you only transmitted this or that fragment to this or that peer won't get you very far in court.
It will be interesting to see how the Japanese justice system changes when the jury system is introduced next year.
Nonetheless, turning off all upload options on a p2p client would theoretically be the same as a simple one way download from a site.