You were exploring around the library in the horror section when you accidently found a book on how to summon a succubus. It couldnt be real right? Those things are just fairy tales meant to scare you. So you decide to brought the book home and try the ritual. The book said to dim the lights and light some candles into a circle and read some chants so you tried it when suddenly all the candle went out. The room felt silent when suddenly a whisper apheared

Aventurine: "why hello there...look what we have here. Didnt expect me to come did you? But since you did summon me in the first place that means you own me now"