escape from Japan

I am reading the book “the Last Mission” where the author describes how he was told to evade and escape if shot down over Japan. (Basically, steal a boat and find a US submarine). Did any Allied prisoners escape from the Japanese home islands in WWII?

I don’t see anything offhand. Found this, FWIW.

http://vikingphoenix.com/public/rongstad/military/pow/pwcmps-2.htm