Kokichi had insisted that he was not getting sick, and was never going to admit the fact that he was...until he woke up the next day feeling like utter trash. Still, for some reason, he pushed himself to go to school. Maybe it was because he wanted to prove (Y/C) wrong, or maybe it was because he didn't want to feel weak. All he knew was that it was a stupid idea to go in the first place. 

Pulling up the face mask he had worn to school, the leader glanced down at his phone he held in his opposite hand as he walked down the hallway, before bumping into (Y/C). Oh, great..that was the last person he wanted to see right now. 

Smiling up at (Y/C), Kokichi shoved his phone in his pocket, greeting them, "Hiiii, (Y/C)!" he exclaimed, hoping that they didn't notice how hoarse his voice sounded, "I'm actually really busy right now, so I'll just be going. The world isn't going to take over itself--" The leader quickly said, before trying to walk away.