Imagawa Shiguma

Imagawa Shiguma (今川志熊) is a deceased background character referenced in Shinyaku Toaru Majutsu no Index. He was a low-level thug that broke out of her association with the Spider Queen. He was one of the ten man team that was assigned to kill Tsuchimikado Maika as reprisal for Tsuchimikado Motoharu investigating the Agitate Halation Project.

Background
He was one of the Spider Queen's intermediaries, but decided to cut ties with his and just take jobs directly on her own. Along with Anjou Haruka and Kuromatsu Takao, he was part of the ten man team that was assigned to kill Tsuchimikado Maika as reprisal for Tsuchimikado Motoharu investigating the Agitate Halation Project. Little did he know that a "destroyer" was slipped into their ranks as the last person in the ten man team, to kill them after they have done their jobs.

Agitate Halation Arc
After the supposed death of Tsuchimikado Maika in a fire in her dormitory, the destroyer kills Imagawa Shiguma and his body is found with gum stuffed down his throat in a back alley of School District 15.