C9 Lesson of the Homeroom Teacher

Class 18's homeroom teacher — also their mathematics teacher — was an older teacher in his fifties. His name was Sharaf.

His hair seemed to reflect his age quite accurately as not many strands of white hair remained on the top of his head, revealing a large bald patch of skin.

The wrinkles on his face were crisscrossing, like the ravines in a plateau.

Inside a pair of ancient rimless glasses