Hosts Japan made it two wins out of two at the International Volleyball Federation (FIVB) Women's Rio 2016 qualifier in Tokyo.
After a straight sets win over Peru on the opening day yesterday, the hosts came through 25-14, 25-15, 25-11 against Kazakhstan at the Metropolitan Gymnasium in the capital.
It places them at the top of the round-robin, with Italy the only other undefeated side.
They backed up their win in four sets against South Korea on day one by beating Thailand 17-25, 25-16, 25-17, 25-16.
The Koreans bounced back from their defeat by beating The Netherlands today, 29-27, 25-23, 25-21, in a somewhat surprise victory.
The Dutch had begun with a win over Dominican Republic but were second best in today's encounter, despite being among the favourites.
Yeon-Koung was superb for the victors with 24 points, with Dutch coach Giovanni Guidetti describing the Korean captain as "something special".
South Korea now sit third, behind Japan and Italy and ahead of fourth placed Thailand.
In the day's other game, Peru got the better of Dominican Republic, 25-22, 25-16, 26-24.
It means Peru have moved up to fifth with The Netherlands sixth.
Dominican Republic and Kazakhstan, who are both without a win so far, are seventh and last respectively in the eight-team round robin.
The event, which sees every country play each other once, offers four spots to the Rio 2016 Olympics.
As the tournament is doubling as a continental qualifier, the top-ranked Asian team will automatically advance.
Berths will also be secured for the three other highest teams once every match has been played.