In the aftermath of the 2011 Tōhoku earthquake and tsunami and the Fukushima Daiichi nuclear disaster, Hirasawa started traveling around the country with a Geiger counter, measuring the radiation levels and reporting them in his Twitter account. In June 2011, a song was posted on his site, titled "Nuclear Power" (原子力, Genshiryoku): A rerecording of the P-Model song "Boat" (from 1984's Scuba) in the style of "The Aggregated Past – Kangen Shugi 8760 Hours" project, with the lyrics changed to protest against Japan's use of nuclear power and to criticize the government and the media. The song, credited to "Stealthman", was only available on the site for six days, but could be redistributed if unaltered and not for profit. An instrumental mix was posted on the site by Hirasawa after the original was taken down, following the same distribution guidelines. As these events occurred, Hirasawa told a story on Twitter of being assaulted and having his computer and website hacked by "Stealthman". Through his tweets and the way the posts were worded on his website, Hirasawa effectively distanced himself from the track and disowned it. The song is available on the karaoke Service provider Xing's Joysound online song library, credited to "Stealthman".