This does not pass the political smell test.
Dr. Saito is one of Japan's few truly creative high tech individuals in a society that prizes conformity.
His teeny tiny company competes with and often bests giants HPE and Fujitsu in a nationally strategic area. https://www.hpcwire.com/2017/03/14/new-japanese-supercomputing-project-targets-exascale/
Publicly charging fraud in Japanese society is tantamount to a business death sentence regardless of the outcome. The politicos better have a damn good reason.