TOKYO, July 11 (Reuters) - Japan's super-long government

bonds rose on Friday, as investors bought them back after a

heavy sell-off this week, with a firm outcome of the Bank of

Japan's bond buying operations supporting sentiment.

The 20-year JGB yield fell 0.5 basis point

(bp) to 2.5%. The 30-year JGB yield fell 2.5

bps to 3.04%.

Yields move inversely to bond prices.

"The decline in yields on super-long dated bonds is a

response to the sell-off earlier this week," said Katsutoshi

Inadome, a senior strategist at Sumitomo Mitsui Trust Asset

Management.

The BOJ's bond buying operation saw firm outcome around the

bonds with maturities of more than 25 years, which supported

sentiment, he said.

The yields on 20- and 30-year bonds surged this week as the

market weighed the risk of the defeat of the Liberal Democratic

Party and its coalition partner Komeito at the upcoming upper

house election.

The potential defeat could give power to opposition parties

that have pledged in their campaign platforms to cut or abolish

the sales tax.

The market saw no other market-moving cues for the current

session.

The 10-year JGB yield rose 1 bp to 1.5%

The two-year JGB yield rose 0.5 bp to 0.76%

and the five-year yield rose 1 bp to 1.03%.