London Olympics bronze medallist, Saina prevailed over Bae 21-17 21-17 in a 39-minute women's singles match.
In the men's singles, qualifier Anand Pawar put up a fight against fifth seed Sho Sasaki but it was the Japanese who had the last laugh as he saw off the Indian 14-21 21-15 21-11 in a 54-minute match.
Tarun Kona and Arun Vishnu also fell in the first hurdle after losing 20-22 19-21 to Indonesian pair of Angga Pratama and Ryan Agung Saputra in the men's doubles.
Saina, ranked fourth in the world, took time to get off the mark and was lagging 1-4 initially but she soon clawed back at 7-7. Bae fought tooth and nail and went neck and neck till 17-17 before the Indian reeled off four straight points to pocket the first game.
In the second game, Saina opened a 5-1 lead and kept her nose ahead to cruise to the second round.
Saina will take on Japan's Minatsu Mitani in the second round tomorrow.
