Was just looking up return flights to Tokyo from Melbourne and found some fares from STA Travel on Royal Brunei Airlines. Seems reasonable for full service flight.
Departure dates:
23 July 2019 - 13 December 2019
Deal expires:
January 14 2018
Things to note:
You must book via their hotline at 134 782.
Does it show where the layover is? Or is it a direct flight?