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Srikanth and Priyanshu Rajawat lost in the men's singles pre-quarterfinals, while the doubles pair of M R Arjun and Dhruv Kapila too bowed out.
Srikanth beat Thailand's Kantaphon Wangcharoen in the opening round.
Sindhu beat China's Wang Zhi Yi in the final.
Sindhu is now one win away from her maiden Super 500 title of the 2022 season.
Sindhu will next face unseeded Saena Kawakami, the Japanese world No. 38, who caused an upset by eliminating sixth-seeded Pornpawee Chochuwong of Thailand 21-17 21-19.
Manjunath stunned World Championships silver medallist Kidambi Srikanth 21-17, 15-21, 21-18.
World No 5 Sindhu reached the semifinals at India Open and Singapore Open, besides a couple of quarterfinal appearances at Indonesia and ABC but a title has remained elusive.
Momota dug deep to fight back from 16-11 behind in the second game to force a decider.
PV Sindhu lost 7-21, 11-21 to world no. 3 Okuhara in a lop-sided contest.
It is Sindhu's second semifinal of the season, following a last-four finish at the India Open last month.