The head of the UN warned the ASEAN nations in Jakarta about mounting crises while Mr Kishida offered regional partners help with infrastructure and security.
Countries such as the Philippines have lodged protests against China's new map, which includes a "ten-dash line" claiming almost the entire South China Sea.
"More than ever we must work together with the international community to face today's challenges," said PM Kishida at the World War II remembrance ceremony.
South Korea and Japan are working together on North Korea with the US, and that's progress. But incentives are needed to keep old issues from interfering.
The trip was a positive step in standing up against China's aggression. But what are the Philippines and India's common interests, and where do they diverge?
Passing up these agreements would squander Great Power relations dating to WWII and put friends and allies like Japan at risk from growing Chinese aggression.
Defense Minister Yasukazu Hamada had fruitful meetings with his American and South Korean counterparts but China's General Li Shangfu was in a pugnacious mood.
The importance of Okinawa is about deterrence. Demonstrate you're a serious military with lots of partners and an enemy is less likely to try his luck...
Japan is one of four Group E squads in the FIBA Basketball World Cup, and coach Tom Hovasse's team will play Germany, Finland and Australia in...
"Ghosts in the Neighborhood" has its issues. But the primary argument is well made: in postwar reconciliation, apology is not the most important factor.
Taiwan President Tsai Ing-wen and US House Speaker Kevin McCarthy's meeting is a show of democratic solidarity and repudiation China's attempts at intimidation.
For the sake of regional peace and stability, a regional security structure like AUKUS is urgently needed to counter China's hegemonic influences.