Black Palace is a location appearing briefly in the upcoming event in Monster Girl Quest Paradox.
Overview
This place makes a short appearance in the upcoming events in Hades' library. Sun Wukong is looking for Black Alice to announce her success in rallying the Roach Tribe, and sees Kagetsumugi finishing her work on Alice XIII.
When Black Alice doesn't answer as she's apparently missing, Sun Wukong decides to check on a room on the side. The player doesn't see what rattles the Monkey Queen, but the latter rallies Tezcatlipoca and Quetzalcoatl to her cause to escape as she realizes she has likely outlived her usefulness in the eyes of Black Alice.

