Do Kyungsoo did not dress up for this. He did not go through all the trouble of spending almost the entire day and almost half of his monthly allowance to get dolled up just for this.
Because if this is what he’s supposed to witness, then he would have rather stayed cooped up in his room, wearing his comfortable set of pajamas and watching animé on his laptop.
And just like the classic Kyungsoo, he ran away. Hoping that they didn’t get a glimpse of him just to see heartbreak written all over his previously radiant face.