My previous post on ripping Japanese subtitles from Netflix has been quite popular, although the method that I proposed was fairly limited and quite difficult to do. But thanks to user ahlawy who left a comment on my post, a much better method has been discovered, that only requires a web browser!
Update 11/05/2017: Thanks to another user by the name of TITHEN-FIRION, it is EVEN EASIER now.
I have updated my original guide to include this new method. So if you are interested in getting subtitles from Netflix, check it out!