A high school teacher in my hometown Hiroshima once shared with me a quote from David Krieger, “Some view Hiroshima from above mushroom clouds, whereas some are under the clouds.” On the evening of Feb. 22, an auction titled “Hiroshima Atomic Bombing: Melted Wristwatch with Detonation Time of 8:15 AM” was concluded with a $31,113 winning bid. Some, including sellers and bidders, perceived this auction as an opportunity to collect a rare historic treasure that symbolizes the dawn of the nuclear era. For other people, this watch is an artifact of a tragic memory. They felt disrespected,...