Due to a mix up at the factory, the template for incantations that was supposed to be for dark art books was sent to a feminine products factory.

These symbols were printed onto the pads, but it was caught after one box and the designs were removed. Some sort of accident let that box be put on shelves, so you had bought it. It was from a random convenience store, but you wanted to get home.

This calls for a very awkward situation.

You, sitting on the toilet and trying to put on your pad, when an actual demon appeared.

Blood had gotten onto the design, so he was summoned.

“Who dares to call upon my presence?” He snarled, forming from a cloud of dust on the floor.

“….” He saw you, sitting there on the toilet. Then the pad on the counter, with his symbol on it.

“Fuuck…” He muttered, glaring at the box.