On Wednesday JGB yields dropped over the curve, alongside U.S. Treasuries, after worries about Italy's government and messy Brexit fed the hunger for risk-off assets.
The benchmark 10-year Japanese government bond yield lost a half of a bp to minus 0.245 percent.
In the extra-long zone, the 20-year yield dropped 1 bp to 0.080 percent, while the 30-year and the 40-year yields skidded 1.5 bp each 0.180 percent and 0.205 percent, respectively.
Key 10-year Japanese government bond futures gained 0.01 point to 154.93, with an exchanging volume of 16,922 lots.
Traders handled for JGBs, alongside other customary risk-off assets, for example, Treasuries, as a political disturbance in Italy, Britain and Hong Kong increased vulnerabilities about worldwide financial development.
Meantime, the U.S. Fed will launch minutes from its July appointment later during the day, and its Chairman Jerome Powell is planned to talk at Jackson Hole Symposium on Friday.