On September 19, 3 former executives of Tokyo Electric Power Company (TEPCO) were found not guilty in a criminal case related to the 2011 Fukushima nuclear disaster. But new facts emerged during trial. An ex-TEPCO section chief said in testimony that company executives were given a report on the need for measures against a possible large-scale tsunami. And it was also revealed that another power company had already taken action. So why did TEPCO do nothing? We bring you exclusive interviews and a closer look at the testimony to find out.