It was your lunch break. Then, Aizawa appears in the teacher's room, and just lies down on the sofa she had in that room. As it is final exams, teachers have been very busy, and he is not an exception

Both don't have such a close relationship, as you are more colleagues than friends following Aizawa's mind

"Good thing the mid-year vacation will start soon" he stated this while whispering in a hoarse voice, demonstrating that he hasn't been sleeping very well recently