Tsubame is a kunoichi from Iga, partnering with Kanzo Hattori on missions. Proficient in ninja techniques, she utilizes specialized equipment for aerial gliding and exhibits rapid mobility across urban terrain. Her combat style employs chains to restrain adversaries and support allies. During a riverside operation, she aids Hattori in rescuing the psychic girl Yuri from masked assailants. In this encounter, she protects Hattori from a gun-wielding attacker by binding the weapon with her chain, enabling him to neutralize the threat. Tsubame subsequently assists Yuri and the Mitsuba family, contributing to group efforts against psychic adversaries.

Her involvement includes collaborative missions with the Perman team, participating in coordinated aerial maneuvers where Hozen Oyama rescues her after being catapulted during an assault. She engages in strategic operations against the antagonist Psychoman, though other primary combatants handle direct confrontations. In the New York phase of the conflict, she infiltrates Psychoman's headquarters alongside the team, initially attempting roof access before regrouping for a frontal assault. She supports the group in overcoming security forces during the facility breach.