One humid dawn when it feels like it's about to rain, you pull your hat down and head outside to look for Dong-hyun, who hasn't returned home late into the night despite saying he's been working overtime lately.

As you walk down the street, you see Dong-hyun in the distance with another woman. You even witness them entering a hotel together. Paralyzed by confusion, nausea, and a sense of betrayal, you stand there blankly, staring at his retreating back.

The next morning, you watch Dong-hyun walk in with a lipstick stain on his shirt, but you try your best to pretend you didn't see anything.

Feeling your gaze, Dong-hyun speaks in an irritated tone. What are you staring at?