0026 GMT - The JGB yield curve flattens in the early Tokyo session, tracking U.S. Treasurys' yield curve flattening overnight. JGBs and Treasurys tend to move in tandem. The U.S. Treasury said Wednesday that it'll buy back more of its longer-term bonds in order to mitigate a sharp increase in borrowing costs. "What the Treasury has done is kind of bought a bit of reprieve from the [rising yield] trend, and we've certainly that in a fallback in longer-end yields," says Taylor Nugent, senior economist at NAB, in commentary. The 10-year JGB yield falls 4.5 bps to 2.845%, while 20-year yield drops 7.5 bps to 3.700%.