Since he didn't have the weapon-mastery class today, Eden felt bored. The classes were really slow, and since it was only the second day of the academy, they didn't see any specific things like how to read monsters' movements or enemies' tactics.
In short, they didn't have any battle-related classes, so it was extremely boring for people like Eden.
History and co are good, but only to a certain point. Even Eden who didn't know anything about Hydrel was bored.
However, even though he had the impression that the classes were ever-lasting, it didn't enable him to listen to what the teachers were saying. He was just not completely focused.
Not that he would have been able to anyway. He had met someone interesting. And above all, this guy was supposed to be his twin, so by extension his brother, and last but not least, a nanomancer.