For the first time in a generation, Japan finds itself navigating the unfamiliar terrain of rising prices and rising borrowing costs simultaneously. The Bank of Japan lifted its benchmark rate to 1.25 percent on Friday — a level unseen since 1995 — marking the sixth increase in two and a half years as the country slowly unwinds decades of near-zero monetary policy. The decision reflects both a global moment, in which energy disruptions from the Middle East are forcing central banks worldwide to tighten, and a distinctly Japanese reckoning with an economy long defined by deflation, a weakening