This is a story about steam locomotives (SLs) in honor of "Respect for the Aged Day." The "Lady," who is 90 years old by traditional Japanese reckoning, is making a comeback after six years. On September 19th, at JR Shin-Yamaguchi Station in Yamaguchi City, Yamaguchi Prefecture, the C57 steam locomotive, affectionately known as "Shigonana," was unveiled at a press preview. ◆Reporter's Report: "SL C57, which has been undergoing repairs for a long…