The BWF World Tour Finals is the season-ending tournament of the BWF World Tour, where the top-eight players/pairs in the season's rankings are granted entry.
The 26-year-old Sindhu had made it to the last four in Indonesia Masters last week and also at the French Open in October.
After a slow start, Sindhu, the reigning world champion, engineered a turnaround to register a hard-fought 17-21 21-17 21-17 win over Japan's Ohori in one hour 10 minutes to advance to the pre-qfs.
Sindhu will be joined by Indonesia's women's doubles player Greysia Polii, who won the gold medal at Tokyo Olympics.
Just days after their semifinal finishes at Indonesia Masters Super 750, the two top Indian shuttlers will begin their campaign at the World Tour Super 1000 event in their quest for title.
India's challenge in the event now rests on Kidambi Srikanth, who will play third seed Anders Antonsen of Denmark in the men's singles semifinals, later in the day.
Reigning world champion Sindhu, seeded third, scripted a convincing 21-13 21-10 win over the unseeded Yigit in 35 minutes to extend her dominating head-to-head record against the Turkish shuttler.
Prannoy beat Tokyo Olympics gold-medallist Victor Axelsen 14-21 21-19 21-16 in a tense one hour 11 minutes battle in the men's singles second round.
The two-time Olympic medallist will now lock horns with world no 30 unseeded Turkish shuttler Neslihan Yigit in the quarterfinals.
In its October 13 order, the HC had resolved that it would pursue recovery of all the listed assets left by Jinnah and Fatima and use all force available with it to bring these assets to surface.
Among others, sixth seeded Indian men's doubles pair of Satwiksairaj Rankireddy and Chirag Shetty will be up against Malaysia's Ong Yew Sin and Teo Ee Yi later in the day.
Indonesia Masters: PV Sindhu eyes podium finish; Saina Nehwal, Sameer Verma pull out due to injuries
Sindhu, who had claimed a bronze at the Tokyo Olympics to go with her Rio silver medal, reached the quarterfinals and semifinals at Denmark and France before skipping the Hylo Open in Germany.
Sindhu has already been the recipient of Padam Shri in 2015, India's fourth-highest civilian award and highest sporting honour of India, Khel Ratna award in 2016.
The 26-year-old from Hyderabad squandered a one-game advantage to lose 21-18 16-21 12-21 against the world number 15 Takahashi, a bronze medallist at the 2013 and 2014 Asian Championships.
Sindhu, seeded third, scripted a convincing 21-14 21-14 win over eighth seeded in 38 minutes to extend her dominating head-to-head record against the Thai to 14-1.