Shiraishi was also convicted of sexually assaulting all eight female murder victims and stealing cash. Using a Twitter handle that loosely translates as "hangman," he invited his eventual victims to his apartment after they had expressed suicidal thoughts. The nearly three-year hiatus in executions in Japan is thought to be due to the dismissal of former Justice Minister Yasuhiro Hanashi over inappropriate comments about the death penalty at a political gathering in 2022. He said the ministerial post is a "low-key" position and it becomes "a top story in daytime news programs only when stamping a seal on documents of executions." Before Shiraishi, Tomohiro Kato, 39, was the last to be executed, in July 2022. He was convicted for a 2008 rampage in Tokyo's Akihabara district in which seven people were killed and 10 others injured.