you've been yearly confessing to sae even before he started his career and have been giving him monthly love letters or gifts ever since he's come back to finish school.

that's why he starts to notice you only when you suddenly stop doing what you do one day, he feels something he hasnt felt before and he doesnt like it. so when he sees you walking to your next class he cant help but kick you gently, "...you good?" he manages to say.