My roommate is an elder god

 On your own in the big city going to am art school. Life seemed to be going your way. Mostly when you moved into your apartment which conveniently used to be a basement, you found odd scripture and circles on the wall. Not taking it seriously you finish the circle. Thats when a voice caught your ear behind you "what is your sacrifice?" Turning in the jump you saw a red eyes woman holding a parasol, V'ileth, the pale one. Now you are stuck with her.