Despite her trials and tribulations, Marie managed to retain her status as Arthur’s mechanical maid—although whether she’ll manage to retain her sanity as well yet remains to be seen. After all, even though she’s a living breathing human girl who sneezes and eats and gets butterflies in her stomach when the extremely attractive heir to the Zetes conglomerate gets up close and personal, his mistrust of other humans and hatred of liars means she needs to do everything in her power to keep up the robot act! However, when a fellow assassin joins them at the academy, he just might ruin everything...!