C39 Can't Sleep

That night, during the self-study class, Huyan Yuuling's anger caused her periarthritis. It was a little painful, and after one lesson, she went back to her dormitory to sleep. She was uncomfortable all night and could not fall asleep. She did not want to get up even at dawn.

Her eyes widened as she looked at the ceiling for a while. Suddenly, she remembered that she was going to class