A 1920s Japan where the regime never fell and Onmyodo bleeds into diesel engines. The animation captures something between rotoscope elegance and deliberate, almost painterly stillness that makes violence feel like it costs something. The show builds its entire weight on a woman being ordered to kill the thing she loved most, then never lets her stop paying for it. The plot gets tangled trying to justify itself, but the moment-to-moment animation and that haunting RAISE A SUILEN theme make the cost feel real in a way most revenge stories never bother with. This is for people who want their trauma represented with actual visual language, not explained through dialogue.

Japan in 1931 remains under the absolute rule of Prince Tokugawa Yoshinobu, now 94, as traces of Meiji culture sit alongside advancing science and the esoteric art of Onmyodo. Behind this modern surface, the rebel group Kuchinawa plots to assassinate the prince and bring down the regime. Opposing them is Nue, the government's secret squad of executioners. Sawa Yukimura quietly runs the Tsuyukasa Bookshop, but she has lived for revenge ever since her family and tribe were murdered when she was young. Gifted with the power to transform through her blue blood, she joins Nue after being promised information about Janome, the Kuchinawa leader she blames for the killings.