There is a cartoon about the principle of mirror reflection that kills monsters. It took a long time. Please help.

Haha ~ In fact, there is a plot like this in Sailor Moon. In one episode, the monster is a photographer, and the weapon is a camera. Sailor Moon wins by using the mirror reflection to let the monster's camera shine on him.

What I said is too brief. Many cartoons have more or less similar plots. I don’t know if the main plot of the cartoon I requested is based on the principle of mirror reflection or if part of the plot is about this. . .

It’s really hard to find