Itazura's Squad

Itazura's Squad (いたずらの背番号, Itazura no Sebangō), otherwise known as the Hell-raisers (地獄調達者, Jigoku Chōtatsusha) and the Dogs of War (戦争の犬, Sensō no Inu), was a group born from the will to kill Takahara "Raiden" Yasuhiro and Zenshin for the death of Serena Natsume.

History
Following the death and subsequent burial of Serena Natsume, Itazura vowed to kill those who had killed Serena. When he left in the night to fulfill his vow he intended to do so alone for he didn't want to involve his friends in his personal war. Before leaving however he first stopped by Serena's graveside to say goodbye but was surprised to find Heiwajima Taira, Yūri Hiroshi, Fox Satonaka, Indra Taira, Tedasuke Shiba, Estelle Hakuya, Naoko Izuru, Yori Hisagi, and Hoshi Madarame awaiting him. Off from the main group as also Kyousha Takeshi and Kazeshini, the former of whom also bringing Kouatsu. Each pledged themselves to Itazura's cause and thus the team with the goal of killing those who killed Serena was born. Kyousha revealed that it had been Tadashi and Shin who had given them their orders.

Established Teams
For the mission to Heisekai the members split off into five teams in order to be spread out amongst the five islands forming the Heisekian archipelago. The teams are:

Knot Island Team

 * Itazura Kori (Carrying Kouatsu (Spirit))
 * Naoko Izuru
 * Yori Hisagi
 * Hoshi Madarame

Boon Island Team

 * Yūri Hiroshi
 * Estelle Hakuya

Chrono Island Team

 * Fox Satonaka
 * Heiwajima Taira

Fortune Island Team

 * Tedasuke Shiba
 * Indra Taira

Quest Island

 * Kyousha Takeshi
 * Kazeshini (Spirit)