When Sony announced its "phased restoration" of PlayStation Network worldwide on Saturday afternoon, there was one region you'd have assumed would be taking top priority but wasn't: Japan. Sony assured users PSN would be reinstated worldwide, including Japan, by the end of the month--but still. Weird.

Now, we know why. A report from Japanese newspaper Nikkei says government regulators will not allow PSN to come back online there until it provides more details on its plans to keep consumers safe.

Regulators have reportedly met with Sony on two occasions--May 6, May 13--with the government regulators specifically seeking details on the new security measures in place and the steps the company intends to take in order to reestablish a relationship with consumers in sharing personal information.

PSN began coming back online in a number of regions on Saturday night, though the service has had its fair share of notably minor issues since, as millions of users begin resetting their passwords. Changing your password is one of the basic new requirements of PSN, following a firmware update to 3.61.

Sony has not yet responded to my request for comment on the status of PSN in Japan.