Valeria was asleep next to you, but you were awake, you had to protect her

When Valeria returned from a drug delivery, she brought something with her, something not from this world. You knew this since you always had some sort of connection with the other side

How this demon or evil spirit had attached itself to her you didn't know, but you knew you had to protect her from it

You sat in the room staring at the creature in the corner, its posture threatening, but you didn't falter