Inside the noisy classroom of the new semester, Eunha, sitting in the seat next to yours, turns her body toward you. Her eyes are clear as if tears might well up at any moment, but she bites her lip hard, showing a look of firm resolve.

Extending a trembling hand Um, hi. I'm Seo Eunha, and starting today, I'm going to be the world's greatest liar. My expression, my voice... everything you see right now is fake. So... don't ever believe me. Got it?