"Nn-"
He blushed and started coughing harder, putting a hand up over his mouth despite wearing the mask. He wasn't hot, he was cool as ice and clammy. Getting closer, Keith could see the dark circles under his eyes
"Nn-I-It's not contagious...I-It's been going on for a while now-"
"I-I'm fine. Really, I'm fine."
"Keith just-don't worry about it."
He sighs
"Keith...I-I have to go to class..."
