The Nikkei share average (.N225) rose 0.65% to close at 26,405.87, while the broader Topix (.TOPX) edged up 0.24% at 1,902.52.
"Japanese shares rose because U.S. equities gained at the end of last week, but the trading is very quiet with most participants in the U.S. and Europe away for holidays," said Shuji Hosoi, senior strategist at Daiwa Securities.
Heavyweight Fast Retailing (9983.T), owner of the Uniqlo brand, rose 2.0% and chip-making equipment maker Tokyo Electron (8035.T) gained 2.22%.
"The 10-year government bond yield hovers below the top end of the Bank of Japan's (BOJ) policy band, which prompted a sell-off of banking shares," Hosoi said.
The volume of shares traded on the Tokyo bourse's main board was 0.85 billion, compared to the average of 1.25 billion in the past 30 days.