TOKYO, Dec 3 (Reuters) - Japanese government bond yields fell on Friday as investors took comfort in solid response to an auction for 10-year debt in the previous session, while concerns over the impact of the Omicron coronavirus variant boosted demand for save-haven debt.

The 10-year JGB yield fell 0.5 basis point to 0.050% and the 20-year JGB yield fell 0.5 basis point to 0.450%.

The 30-year JGB yield also fell 0.5 basis point to 0.665%. The 40-year JGB yield fell 1.5 basis points to 0.705%.

The five-year yield fell 0.5 basis point to minus 0.100%.

The two-year JGB was untraded and its yield remained at minus 0.120%.

Benchmark 10-year JGB futures rose 0.14 point to 152.11, with a trading volume of 26,508 lots. (Reporting by Tokyo markets team; editing by Uttaresh.V)