Article about abortion in Japan
Contrary to what most people believe, abortion in Japan is not legal. The reason abortions are performed freely in Japan — 210,000 were reported in 2010, but the number is probably higher — is that shortly after the war the dataizai (illegal abortion) law was exchanged for the Eugenics Law to address the population boom. This law allowed for a pregnant woman to abort her child only if the pregnancy threatens her life or health, or if the woman is financially unable to raise the child. It did not make abortion a right available to any woman who wanted one.
for more http://blog.japantimes.co.jp/yen-for-living/japanese-laws-make-abortion-an-economic-issue/