The Japan Rugby Football Union (JRFU) has confirmed that they have not yet found a suitable replacement for former coach Eddie Jones.
The Australian led the Brave Blossoms to three victories in the pool stages of the 2015 Rugby World Cup, including a now-famous upset over South Africa in their opening encounter.
The results have taken Japanese rugby to new heights and the JRFU had hoped Jones would be on hand to take them further. However, he has taken up a post as coach of the Stormers for the 2016 Super Rugby season.
Noriyuku Sakamoto, JRFU Chairman, revealed that they had asked Jones to stay, but he had already made other plans.
"We had a discussion and found that he had already made a decision, so we respect his decision," said Sakamoto following the ceremony that revealed the new 2019 RWC logo on Tuesday.
"We are looking at the selection of a new coach. We would like to announce it before the end of this year but we don't know if we will be able to. That is our hope. Watch this space."
Meanwhile, Akira Shimazu, chief executive of the Japan Rugby World Cup organisers, hinted that the next phase of Japanese rugby would be to improve the forwards and make Japan "the land of the rising scrum."