Two percent is not a ceiling for 10-year yields in Japan as deflation ended and the economy is expanding.
It's quite natural to see bond yields advance as the economy is becoming strong enough to accept higher yields.
Yields won't gain much after the policy shift because the central bank won't keep tightening monetary policy.
People sold bonds excessively the past several days and yields became high enough to attract buyers. Declines in stocks are giving people a chance to pay more attention to the value of bonds.
Treasury yields will go higher as investors are concerned about inflation. Money is going into commodities to chase higher returns and that is adding to inflationary pressures.
The current yield level is attractive enough and we can expect some buying. Additional evidence to show the economy is expanding, or consumer prices are rising, is necessary for bond yields to reach a higher range.