Japan called on other Group of Seven countries to reaffirm their agreement on exchange-rate policy, Finance Minister Shunichi Suzuki said on Thursday, a sign Tokyo remains on guard against the risk of further sharp declines in the yen.

Suzuki said he hoped the G7 finance leaders take into account Tokyo's call in a communique to be issued after their two-day meeting ends on Friday.

"I explained how recent currency moves have been rapid, and that it was important to reaffirm the G7 agreement on exchange-rate policy," Suzuki told reporters after attending the first day of the G7 meeting.