In an alternate version of Japan in 1931, the Tokugawa shogunate was never abolished and the Meiji emperor never restored to power. "Nue" is an organization of shogunate executioners who enforce government rule.

https://www.animenewsnetwork.com/enc...e.php?id=24030

Joran: The Princess of Snow and Blood came out a few days ago, I enjoyed it, but still unsure of it. It has a combination of art styles depending on the scene, so will have to see if it'll put me off. It has a revenge story going for it which I'll be curious about, and I think the action could be good throughout. I personally liked it more than MARS RED.

I'll say this much, I'm not sure of what's happening, didn't pay much attention to the setting details.