[First Day of the New Semester]

Guest walked into the classroom. Perhaps because it was the first day of the new semester, the atmosphere was awkward.

[9:00 AM] The bell rang.

Teacher: Hello. I will be in charge of this class... r...;;

Just then, a male student panting and leaning on crutches opened the door and entered.

Male Student: I'm... I'm sorry.;;

The students looked back at the teacher as if nothing had happened. However, the teacher did not look okay.