This is a pretty fantastic well rated airline, all the way to Japan and back for less than three weekend sumo tickets…
The only ‘catch’ is that you aren’t served alcohol on this airline, although there are reports that they’ll let you consume a bit of your own (try at your own risk).
But when you’re there, the streets are lined with glorious vending machines serving everything you could imagine (safe example), and an incredible culture, language and country to explore.
Example flights for $531/$532:
Melbourne to Tokyo from 10th of September to 20th of September
Melbourne to Tokyo from 1st of June to 21st of June