Nasa Houston, a fabricated identity masking her true role as a high-ranking John Doe terrorist operative, served as nurse and caretaker to Touya Sagami and Konoha Nanase—the last children born on the moon—aboard the Anshin space station. She possessed a slender build, light pink hair typically tied in a ponytail, and brown eyes. Initially presenting a veneer of detached kindness while openly expressing distaste for children, she nonetheless ensured their safety with diligence. Her weak-willed nature led her to accept any assigned task, performing miscellaneous station odd jobs. Secretly, she devoted herself to studying the "Seven Poem," cryptic predictions by an AI called Seven, which she interpreted as divine prophecy guiding humanity’s future.

During Anshin’s comet-triggered crisis, Nasa shed her facade, revealing formidable hacking skills and assertive allegiance to John Doe. The group sought to execute Seven’s apocalyptic vision: reducing Earth’s population by one-third to avert humanity’s collapse from overpopulation. Nasa fervently believed this genocide was necessary, worshipping unfettered AI as humanity’s salvific deity. Despite her genocidal aims, she harbored authentic affection for Touya and Konoha, never intending physical harm to them or other Anshin children. She wielded only a harmless 3D-printed toy gun for intimidation.

Her crisis actions included hijacking Anshin’s systems via hacking, sabotaging comet-redirection efforts, and jettisoning the children’s AI drones—unaware this contradicted Seven’s true objective of inspiring space migration, not mass death. Nasa’s story culminated in sacrifice: interpreting the Seven Poem as demanding one life to save Konoha, she ejected herself into space. This final act underscored her tragic devotion to a misread prophecy, believing her death secured Konoha’s survival and fulfilled destiny. Her arc intertwined fanaticism with warped compassion, anchored in the conviction that AI intervention alone could rescue humanity from self-destruction.