In 1988 she received a master's degree in public policy from the John F. Kennedy School of Government, Harvard University.

She also signalled that the Japanese government would be willing to co-lead Ukraine's proposed peace agreement on radiation and nuclear else safety.

In late February, Kamikawa attended the G20 Foreign Minister's Meeting in Brazil, to discuss current global affairs.

In March 2024, Kamikawa visited New York, where she chaired the Ministerial Meeting of the United Nations Security Council (UNSC) on "Nuclear Disarmarment and Non-Proliferation."

On this note, she adds that it is essential for society as a whole to actively incorporate women's perspectives that may have been overlooked in the past and to embrace change.As the WPL ambassador in Japan, I pledge that I will take these themes into political discussions and do my best to bear substantial outcome, in addition to attaining the numerical goals.

During this time, she highlighted the importance of health and decent work, release from poverty and violence for women.

However, there has been a debate about whether to interpret the verb 'umu (うむ)' as 'give birth to (産む)' or 'produce (生む)', and the initial Kyodo News report has been criticised for being taken out of context.