As the coordinator of ASEAN-Japan relations, Thailand has been instrumental in defining the framework for ongoing collaboration. Amidst global uncertainty, Japan recognizes the strategic importance of the ASEAN bloc as a steadfast regional ally, contrasting with the more distant and fluctuating policies of Western nations.

With a history of supporting ASEAN, particularly during the Cold War, Japan continues to engender goodwill through its "heart-to-heart" diplomacy. Despite Myanmar's absence due to internal strife, the summit welcomed Timor Leste's Prime Minister Xanana Gusmao, with the nation poised to join ASEAN.

Japan aspires to deepen its ties with ASEAN under the enhanced title of comprehensive strategic partnership, a status shared with China, Australia, India, and the U.S., and aspired to by South Korea. The duo is working within their respective Indo-Pacific frameworks, with Japan's 2020 joint statement with ASEAN serving as a model for cooperation in key areas like maritime security, connectivity, and sustainability.

During the summit, Kishida reassured ASEAN of Japan's support in addressing the region's challenges, backing this commitment with a substantial funding pledge. Over the next five years, Japan will provide $35 billion for climate action and other initiatives, and will collaborate on developing next-generation vehicles.

To further enrich ties, Japan has granted $280 million for cultural exchange programs and $105 million for collaborative research over a decade. These efforts reflect Japan's dedication to fostering a robust ASEAN relationship for the next 50 years.