The ittf website is a bit hard to read, the following are the players seeded in the round of 16

As per the table below and based on how the competition is set up and assuming that none of the qualifiers or round of 32 will get through, the quarter finalists seem to be Mizutani, Karlsson/Chuang Chiu Yuan, Samsonov and Koki Niwa. My prediction is Mizutani to win it from Samsonov.