The G7 nations are Canada, France, Germany, Italy, Japan, the UK and the United States. Currently, all other nations are open to tourists.
It is not officially confirmed by the Japanese government yet. However, tour operator InsideJapan said it applauded the greatly anticipated announcement.
"This is something we have waited over two years for and something that can't come soon enough," said the group's co-founder, Simon King.
Although details were yet to be confirmed, "it would seem that Japan is set to open for tourism again in June," he said.
Inquiries were already verging on pre-pandemic levels according to InsideJapan.
Since March 1, foreign business travellers and students have been able to visit Japan from certain countries, as long as they are fully vaccinated (including a booster) and can present a negative pre-departure test.
Currently, foreigners cannot travel to Japan for tourism. Visa exemption agreements are also suspended for those visiting on holiday.
Since closing it's borders in April 2020, japan has since become an outlier in a region that has largely lifted border restrictions and restarted quarantine-free travel.