Defending champion Honey Baisoya and Gurgaon-based Shivendra Singh Sisodia occupied tied second at six-under-66.
Aman took the early advantage, thanks to a round that featured an outstanding nine birdies against two bogeys. His hot putter helped him to sank some long putts to move to five-under through eight holes.
The 22-year-old, playing his second season as a professional, bogeyed the ninth but came back stronger with four more birdies on the back-nine where he landed his chip shots within a couple of feet on two occasions.
Aman said, "I shot an eight-under in the final round of the Jaipur event last week that helped me finish in the top- 10. I feel I've carried forward the form and confidence from there.
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"I struck it well today and didn't miss many greens. Whenever I missed the green, I recovered with some good chips. I capitalized on all four par-5s today with birdies. I believe hitting fairways will be crucial this week as the fairways are pretty narrow here.
Delhi golfer Baisoya, who finished runner-up last week in Jaipur, continued to impress with seven birdies and a bogey in the opening round.
Baisoya, a winner of three events, including one this year, made some brilliant recoveries from the bunker and the rough on at least three occasions to salvage birdies.
Shivendra Singh Sisodia also had seven birdies and a bogey to show on his card. Sisodia was two-under at the turn but his round took off after his birdie chip-in on the 12th. He collected three more birdies thereafter to end the day with a solid 66.
Among the nine golfers bunched in tied eighth at 69 was Noida's Vikrant Chopra.
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