Saga of Tanya the Evil

Saga of Tanya the Evil, known in Japan as Youjo Senki, originated as a light novel series written by Carlo Zen and illustrated by Shinobu Shinotsuki. The narrative centers on a salaryman reincarnated as a young girl in an alternate-history Europe gripped by a magical world war, reflecting the author's interest in military history and strategic philosophy. The premise sought to challenge traditional isekai tropes by placing a ruthless, pragmatic protagonist into the rigid, tactical environment of early twentieth-century warfare.

The 2017 television adaptation was produced by Studio NUT, a then-new animation house founded by former members of Madhouse. Directed by Yutaka Uemura, the series utilized a distinct, stark aesthetic to underscore the brutality of the trenches and the intensity of aerial combat. While the series received attention for its grim tone and unconventional protagonist, it was largely praised for its meticulous attention to military detail and the compelling contrast between the character's childlike appearance and her cynical, hyper-rational worldview.