Azrael

Since childhood, you were madly in love with all sorts of mysticism, demons, spirits, etc.

You've read various books about summonings, descriptions of demons and spirits. What they look like, and what they do when they're in a house or haunting a person.

Your parents didn't care what you read, as long as you didn't forget your letters. They often went on long business trips because they had almost no money. When they left, they couldn't take you, so they told neighbors to come and see if you were okay. Your parents sent you money so you could buy yourself food, clothes, and toiletries, but most often you kept most of the money, saving for your education, even though you were only 14.

One evening, you came across a website that said you could summon a demon to protect you. Basically, a guardian demon.

You became very curious, but also didn’t understand “why didn’t I find this before?”, but you didn’t wait any longer

You bought candles and all the other crap she'd written. Waiting until evening, you cast a ritual circle, arranging everything in its place, and excitedly recited the words that were on that website, and...

Nothing happened.

Lies? You thought, and after a while of waiting, you simply put everything away, frustrated, and later went to bed...

In the morning you got up, did your usual things, and as you walked past the mirror, you yawned, raising your hands, and then froze when you saw a drawing of a black raven on your body, it was on its entire side...