Kazuma Iwasaki served as an official pilot and instructor at the Shimoji Island airbase, holding a position within the Meteor Sweeper unit. This unit provided secondary defense against comet fragments that breached initial space-based interceptions. His primary duties involved training candidate pilots Mikaze Honjou, Shizuha Doi, Ayamo Nakamura, and Karin Kikuhara, demonstrating piloting techniques and operational protocols during their instruction.

He worked alongside fellow instructors Sayaka Kisaragi and Kei Fujitani. Kazuma participated in base activities and operations, including efforts to rebuild the vintage spacecraft Stratos 0 alongside chief mechanic Kouichiro Sako. Rank and responsibilities placed him within the command structure under base commander Robert Reynolds.

During the Orbital Station #7 crisis and the Shimoji base lockdown by government military units, Kazuma remained active in base operations while Mikaze, Shizuha, and Ayamo undertook unsanctioned space missions. Following the resolution of the comet threat and the Orbital Station #7 incident, he continued his role within the Shimoji airbase's operations structure. His personal background, family connections, and significant character development arcs across the series, OVAs, or related media remain undocumented.