Hanyou no Yashahime: Sengoku Otogizoushi - Ni no Shou

Synopsis

The girls return to the modern era and reunite with Mei, her paternal grandmother and paternal great-grandfather. They inform them of the Grim Comet and leave to find Osamu Kirin. The right arm of the rogue Beast King explains his admiration for how humanity has evolved on its own and that he wants to ensure their survival as they will remain utterly oblivious to their sudden extinction. The girls go to warn Moe Higurashi of the danger she is in, but she brushes it off and performs as the violinist. Stuck in the rift between the feudal and modern eras, Kirinmaru orders his right arm to lead there as hordes of demons attack. That night, the girls and Osamu prepare to fight as the Grim Comet finally reveals itself.

(Source: Wikipedia)