The 30-year JGB yield rose half a basis point to 0.185% and the 20-year yield nudged up half a basis point to 0.085%.

An auction designed to provide the market with extra liquidity attracted ample demand on Thursday.

The bid-to-cover ratio, a gauge of demand, at the so-called liquidity enhancing auction rose to 2.87 from 2.77 at the previous sale.

The finance ministry offered 600 billion yen ($5.64 billion)of JGBs with remaining maturities of five to 15.5 years at Thursday's auction.