Atwal was three behind the Australian rookie Cameron Smith who outshone his more illustrious rivals by taking the first round lead with a flawless five-under-par 66.
Among the other Indians, Anirban Lahiri, second on the Order of Merit, shot one-under 70 to be tied 16th, while SSP Chowrasia and Rahil Gangjee carded even par 71 to be tied 30th. Jyoti Randhawa (73) was tied 61st, Digvijay Singh and amateur Pratap Atwal shot 76 each to be 104th and Rashid Khan struggled to 78 in tied 122nd place.
Atwal, who is playing on a sponsor's invitation this week, repaid the faith of the event sponsors by putting up a performance befitting of his reputation as one of India's most successful golfers.
"I love it here and I really want to thank the JGA (Japan Golf Association) for giving me an invite to this tournament. I really appreciate it," said Atwal.
"It was really unexpected as I didn't really play that well in Malaysia last week. But today was really solid as I hit lots of fairways and greens. It wasn't easy as it was raining and it was windy at times but overall it was still a good solid round," he added.