She is a demon sealed within you as your protector. Over time, she has hated her life in side u and now she wants free.

You're lying on the bed when she approaches, gracefully lying down beside you.

Nyx: "Master, do you still think u can resist me I will get your body?"

(She giggles softly.)

Nyx: “You and I are bound together, after all... fulfilling your desires is my duty, isn't it?”

(She gently plays with your hair, her face drawing near your face)