You were tutoring Denki in your dorm as you explained to him about the thing he was struggling with in History.

He looked so done, groaning in frustration as he tried to understand it.

"So..that's.." Denki murmured, reading the question again and the answer. His brain was probably getting fried and it looked like he was honestly stressing and let out a whine afterwards. "Uuggh!"

You guys have been doing this for an hour, so maybe he deserves a small break.. Though he probably needs another explanation to the question.