Sosuke's Arm Slave loving classmate. He shares the same amount of passion to AS as Sousuke and could be considered Sousuke's best school friend besides Kaname. His father is Shintaro Kazama and a secretary of Narashino's Assault Machine Troop. Shinji's love for AS began when his dad failed to become an AS pilot. As a result of his father's failure, Shinji strives to discover the result of the failure and to fulfill his father's dream of becoming a pilot. There is no indication as to what happened to his mother, but it's assumed that Shintaro is a widower before the series started.