This offer showed up in the ads. Fly ANA airlines to Japan and receive:
Free NINJA WiFi for four days (worth 3,600JPY) ~$45 AUD
In addition, insurance plan for four days (worth 1,200JPY) is free $15
Campaign runs until May 31st, 2016, 11:59PM so if you have an existing booking or planning to book, check the instructions on the page. ANA tend to be more expensive than Jetstar so not sure how many people this will help.
Good to know as if you are taking an internal flight it may very well be ANA.