Yaya Akabane is a key character in the anime series "Machine-Doll wa Kizutsukanai" (Unbreakable Machine-Doll). She is an automaton, a mechanical doll with advanced capabilities, created by the skilled puppeteer, Raishin Akabane. Yaya is fiercely loyal to her master Raishin, often demonstrating a deep affection for him that borders on romantic. Despite her seemingly delicate appearance, Yaya possesses incredible combat abilities, making her a formidable opponent. Her role in the series is central, as she assists Raishin in his quest to become the Wiseman by participating in magical duels.