Arithmetic

The next class was Intermediate Arithmetic.

It was taught by an old professor with a distinctive long white beard and bald head. When he went to the class, he immediately started teaching after introducing himself. 

Perhaps he was already too old, he was no longer interested in knowing the names of his students.

Nevertheless, they didn't mind this attitude since this is still the Academy of the Dark Arts. This place is full of eccentric people so it's not surprising to have a strange Professor.

Anyway, Vale realized that Intermediate Arithmetic has similarities to Algebra for freshmen students in Junior High School if he compares it to his previous life. 

It was basic for him so he felt a bit bored in this class. 

While all of his classmates were seriously listening and taking notes from time to time, his mind started wandering off as he entered his Phantasm State.