Not far from the Fukushima nuclear disaster site, former plant worker Toru Akama tends to dozens of pets abandoned after the catastrophe 15 years ago, work he sees as part of his quest for redemption. Miaows and barks break the silence of the countryside, once an evacuation zone, as the 63-year-old brings food to the animals left behind when their owners fled the triple disaster of March 11, 2011: earthquake, tsunami and nuclear accident. “It’s because of this plant, where we worked for years,...