Twilight Takes Over - Nioh 2 episode 50

I don't really understand what the heck just happened, but I do know that I need to put down so many more yokai.
Nioh 2 is an action role-playing video game developed by Team Ninja for the PlayStation 4. It was published by Koei Tecmo in Japan and Sony Interactive Entertainment worldwide on March 13, 2020. It is both a prequel and sequel to Nioh.