Japan and Indonesia retained their respective women's and men's titles on the final day of the Badminton Asia Team Championships in Manila.
The Japanese women swept aside South Korea 3-0, while Indonesia beat Malaysia 3-1 in the men's final at Rizal Memorial Coliseum.
Akane Yamaguchi, the world number three, battled past An Se-young 21-18, 19-21, 23-21 in an hour and 23 minutes to put the first Japanese point on the board.
Yuki Fukushima and Sayaka Hirota moved Japan to within one win of defending their crown when they overcame Lee So-hee and Shin Seung-chan 21-16, 21-16 in the opening doubles rubber.
Victory for Japan was sealed by Sayaka Takahashi, who gave her side an unassailable 3-0 lead after defeating Sung Ji-hyun 21-16, 21-12.
"I was very confident that we can be champions with this team," Takahashi said.
"I'm happy that we became champions.
"It was a good experience for the next ones to come."
Indonesia's triumph over Malaysia handed them a third straight continental crown and maintained their 100 per cent record at the standalone team tournament.
Anthony Sinisuka Ginting beat Lee Zii Jia 22-20, 21-16, before Marcus Fernaldi Gideon and Kevin Sanjaya Sukamuljo put Indonesia on the brink of victory by ousting Aaron Chia and Soh Wooi Yik by the same scoreline.
Malaysia cut the deficit thanks to Cheam June Wei's 21-16, 17-21, 24-22 win over Jonatan Christie.
Mohammad Ahsan and Fajar Alfian sealed the crown for Indonesia with a 21-18, 21-17 victory against Ong Yew Sin and Teo Ee Yi.