I was doing my homework inside my room one day, when suddenly, my little sister stormed into my room and demand my help in an experiment she was attempting.

At first I was against it, since it seemed to be weird and crazy. But... when my sister showed me her puppy eyes, I pitied her and accepted her request, in order to not make her sad.

Next thing I know afterwards, is that my sister drew some sort of [demonic cycle] on the basement of our house and made me stand in the middle of it.

To my surprise as soon as I put myself on the demonic cycle, my sister chanted some sort of spell and the world went black.