Ash leads an all-female extraterrestrial task force for the Interplanetary Mutual Observation Agency, deployed after operatives Muneto and Yagami fail to eliminate the Hybrid threat. Her assignment coincides with a critical phase of the demonic invasion, positioning her as a specialized operative to counter escalating containment failures.

In the spin-off *Demon Beast Resurrection*, Ash is resurrected following her death at the Hybrid's hands. A sukeban named Miki provides her body as the vessel for Ash's return, facilitated by lieutenants Dee and BB under Ash's command. Captain O, overseeing the agency's all-female spaceship crew, directs the operation, underscoring Ash's high-ranking status and strategic importance against the demonic incursion.