Essentially the above information is no longer correct.
Things have improved dramatically.
Probably not a lot of comments on here in recent years because there were very few foreign pilots, but that’s started to change rapidly.
I’d say most of the LWOP pilots from Jetstar are enjoying it here. Yeah some frustration at times but overall happy. Maybe easier to swallow if already used to Jetstar procedures.
Average take home, all up, maybe just shy of $US9000 after tax but if commuting you need to pay for a ticket home out of that, and still accomodate yourself in Japan also. (Under $1000 for rent and utilities if you stick near Narita)