Silence among Japanese over abortion issues
As Masahiro said, Japanese women have mostly remained silence on the topic of abortion except the two occasions, when some conservative politicians tried to change the law to limit the accesibility of the legal operation in 1970s and 1980s. At those times, Japanese feminists called for the necessity of safe and legal abortion, but after the failure of the bill the women's voice became inaudible.
It is hard to pinpoint the reason for this silence, but one of them is surely the frame of discussion for abortion issues in this country. For example, after bioethics was formally introduced here in late 1980s, almost all the talks over the issue fastened on the binary opposition, as the problem between fetuses and women. You can claim such a frame of thinking itself presuppose that a fetus is morally equal to the woman who carries it. This is certainly a pro-lifer's view.
However, there is virtually no objection from the pro-choice league in Japan. There is virtually no alternative way of viewing this problem here in Japan. Why? Guilt may be one reason, but the guilt of abortion for Japanese women is not the one based on Christianity. Instead, it is their inner bind of the idealized motherhood, I should say, that is working here.
The strong motherhood spell for Japanese women has been, and is constructed by many cultural, historical, social, political and/or psychological reasons. I know abortion is a kind of taboo in other nations, too. But Japanese case can serve as an extreme in many ways.
Japanese government allowed its people to use abortion as a family planning method in the aim of limitting the population just after the World War II, but never has it allowed women to choose abortion for their health! And as I told Japanese women little complained about this situation. Instead they pacify their guilt through "Mizuko-kuyo," a modern ritual which became famous among Western scholars by the work of William LaFleur. In the context of this ritual, the women blame themselves and ask the fetus pemission for the "sinnful" conduct as a "mother." From such a mentality, they can never and ever claim their right for such a conduct.
This is only part of the whole problem, however. It is hard to extricate this long-time undiscussable issue, but I think we must challenge it for the better reproductive health for us and our future generation. And I wish our experience could serve a good example for other nations, too.