Keiko Tachibana taught children as a school teacher in the post-apocalyptic settlement of New Kanto, valued for her kind-hearted nature and physical beauty. She devoted herself to providing stability and guidance to her students despite the harsh environment, one of whom, Saburo Tenma, developed strong romantic feelings for her. Her life ended tragically when the motorcycle gang "Hell's Wind" stormed Hope Town (also known as New Kanto). The gang abducted Keiko and other women during the raid, overpowering the remaining townspeople. This abduction became a pivotal narrative event. Keiko Tachibana also appears within the broader "Violence Jack" manga continuity, specifically acknowledged in the storyline of the "Kagero" chapter.