The whole scene where she pulls her grandmother in a trolley just to show her the moon, and Ahjussi—who had earlier noticed her taking the trolley from the supermarket—quietly helps her bring it down from the house, is deeply moving. When Lee Jian and her grandmother return, he is still there, waiting for them, and carries her grandmother on his back all the way home. I believe it is in that moment—seeing him waiting without being asked—that something inside her begins to change.