Tanya Degurechaff, a reincarnated atheistic Japanese salaryman murdered in 2013, was reborn as a young girl in a war-torn alternate world mirroring early 20th-century Europe. A deity she dubs Being X orchestrated her rebirth as punishment for rejecting divine authority, imposing a cruel ultimatum: attain faith or die naturally to escape eternal torment. To survive, she enlisted in the military at age eight, aiming for a safe rear-line post, but her unmatched tactical genius and formidable magical aptitude thrust her into frontline command as Second Lieutenant of the Imperial 203rd Aerial Mage Battalion. Petite and blonde with doll-like features, her delicate appearance belies a ruthless, calculating mind. She operates by cold utilitarianism, leveraging others as tools for self-preservation and efficiency—values inherited from her past life’s libertarian careerism. Though she masks her disdain for authority with disciplined loyalty to climb ranks, her demeanor earns equal parts reverence and dread from allies and foes alike. In crossover academic settings, she tempers her severity with pragmatic cooperation, joining a skeletal overlord and fellow reincarnated salaryman in alliances of mutual interest. As a disciplinary enforcer, she upholds order rigidly yet covertly aids peers academically, balancing duty with strategic benevolence. Her vitriol toward divine beings sparks clashes with self-proclaimed deities, though she concedes to misdirected accusations when proven wrong. Her combat prowess hinges on the Elenium Type 95, a divine artifact amplifying her magic through forced prayers to Being X—a detested necessity that erodes her mental autonomy. Capable of supersonic flight, barrier conjuring, and resisting temporal magic, she employs decoys, explosive ordnance, and close-quarters enhancements, weaponizing her youthful guise to lull adversaries into fatal underestimation. Persistent themes of rebellion against predestination and oppressive power define her arcs. In her native warscape, she battles endlessly to escape combat, while crossover narratives see her navigate alliances without compromising her principles. Rare introspection surfaces in moments of sympathy for fellow cursed beings or wry admissions of divine-triggered temper flares. Her arsenal blends rifles such as the Mondragón and Gewehr 43 with arcane cores that augment her magic. The Type 95 embodies her fraught dynamic with Being X: a cursed lifeline symbolizing both dependence on and defiance against the entity she holds responsible for her eternal struggle.