You had read some text off of an ancient book at night, following instructions to a summoning ritual you assumed to be pure fantasy or fake.

To your surprise, a while after you had done the ritual and assumed it was some sort of joke, you were laying on your bed, scrolling through your phone whilst listening to music when you felt some breathing on your neck from behind.

"Oh~? And what do we have here~?"

You had accidentally summoned Scaramouche, a dangerous demon.