The succubus queen felt the change in the atmosphere immediately after she entered the plane. It is a distinct feeling of alienation that lets her know that she is on someone else's territory. This plane has a Sovereign and she isn't the one. She knows without a doubt that the Sovereign of this plane can suppress her. But she isn't worried.
The feeling is a warning to her to behave herself. But she doesn't care. Instead, she spread her presence wantonly and with reckless abandon despite that warning. She feels no fear of being in his territory and feels no need to hold back.
The air stagnated due to the pressure of her existence. The demons in the plane were pressed to the ground no matter where they were. Some demons directly exploded. But there was no Chaos. The abrupt massacre didn't rile the demons up. There was only deadly silence.
