Kome Sawaguchi, nicknamed "The Hurricane" for her aggressive combat style and formidable reputation, originated from the Japan Self-Defense Forces. Her transfer to the Terrestrial Administration Center (TAC) happened under contentious circumstances due to insubordination, occurring without her knowledge or consent; she physically assaulted her former supervisor upon learning of it. As a TAC field operative, she specialized in heavy weaponry, adhering to a personal philosophy of overwhelming firepower: "If you have bullets, keep shooting." She passionately preferred rocket launchers, bazookas, and similar large-scale armaments, handling them protectively and disliking when others touched her guns. Her military background heavily influenced her tactics, advocating maximum force against Aragami.

Despite an outwardly tough, brash, and rebellious demeanor—often displayed in a bright pink jumpsuit—she exhibited significant superstition regarding ill omens, contrasting her pragmatic side. Vulnerabilities emerged, such as befriending an abandoned puppy and showing self-consciousness about her emotional expressiveness. She developed a complex relationship with TAC colleague Yoshiki Yaegashi, initially marked by friction and her reacting to his behavior with physical outbursts or yelling. This dynamic evolved into a romantic connection, culminating in an engagement by the events of the OVA *Blue Seed Beyond*.

In *Blue Seed Beyond*, set two years later, Kome participated in the TAC mission to San Francisco against biotechnology-created Neo-Aragami, focusing on tactical weapon deployment consistent with her expertise. Her relationship with Yaegashi saw further development, moving past prior conflicts toward reconciliation and commitment. Her foundational traits—reliance on heavy arms, superstition, and a tough yet caring interior—persisted. Her background, including her discharge from the Self-Defense Forces and the origins of her nickname, remained integral.