Corpse Princess Wiki

The Shichisei as they appear in the anime adaptation.

Shichisei (七星 Seven Stars) are an organized group of shikabanes who were responsible for murdering Makina Hoshimura, along with the rest of her family. While forming an alliance with the Unclean Bunch organization under the Unholy King, Sugamimaen, they work together for a specific goal; the total annihilation of the Kōgon Sect and the nearby districts by creating a huge mass of shikabanes. Each of the members are all marked with the image of the constellation Ursa Major and Big Dipper on various parts of their body. Unlike other shikabanes who kill based on their regrets, this group kill based on their own nature. They would even target rogue shikabanes within sight.