My interpretation of the above plot is that a very market savvy trader (Goldman Sachs Japan) is long about 800 put contracts at the 32000 strike. This is mirrored by ABN AMRO (market maker) who is likely to have the opposite position.
Recall that today was a down day for the Nikkei 225. We will continue monitoring options positioning next week to get a better idea of where the market is headed.