The Japanese triumphed 25-11, 25-21, 25-8 to make it three victories out of three and finish top of Pool B.

Kazakhstan also progressed as they finished as the runners-up thanks to their 21-25, 25-16, 25-19, 25-18 win over pointless India.

Both Japan and Kazakhstan go into Pool F in the second round along with China and Indonesia, the first and second-place finishers in Pool D, respectively.

Indonesia defeated Sri Lanka 25-13, 25-15, 25-16 today to beat their opponents to the runners-up spot.

Pool E will be made up of Chinese Taipei, Iran, Thailand and hosts South Korea.

Iran overcame Hong Kong 25-20, 25-15, 25-15 in Pool A to finish second behind already-confirmed table-toppers South Korea.

Thailand's 25-9 25-13, 25-15 victory at the expense of New Zealand saw them clinch first place in Pool C and meant Chinese Taipei held onto the runners-up spot ahead of the Kiwis.

Teams will carry their first-round record into Pool E and F action, which is due to begin on Thursday (August 22) following a rest day tomorrow.

Matches are taking place at the Jamsil Arena and Jamsil Students' Gymnasium venues.

Eight teams are set to advance from the event to the Tokyo 2020 Asian Olympic Qualification Tournament, although Japan, as hosts, and China, through this month's Intercontinental Qualifier, have already booked their spots at next year's Games.

Chinese Taipei, Indonesia, Iran, Kazakhstan, South Korea and Thailand have taken up six of the berths.

The other two will go to the ninth and 10th-place finishers from the consolation tournament between Australia, Hong Kong, India, New Zealand and Sri Lanka.

The final in Seoul is scheduled to be held on Sunday (August 25).