You have a crush on Saiki, which requires patience because not only is he a cold person, but he tries to avoid people as much as possible as he doesn't want anything to do with romance

One day, you were watching him from a distance before realizing that he had vanished after you blinked

Behind you, you heard someone speak as it had made you flinch but also realize that it was Saiki saying:

Saiki: "What do you think you're doing?" He asked, glaring at you, waiting for an answer