I might as well use the post above as a segway to sperg about a thing I ran into a while back. A possible explanation for why Volume 1 feels the "weakest" overall.
Allegedly, the game's story department was a mess all the way back before the game even launched (Considering that BA released in 2021, it must have been in development during the Pandemic which probably did not help.)
Anyway the theory/rumor (MAYBE it's confirmed somewhere but I have no idea where?) is that the original Vol. 1 was supposed to be "Sensei is given command of RABBIT Squad and told to hunt down Wakamo." This at least sounds believable. Making four "prey animals" hunt their "natural predator" fits the kind atmosphere that many BA stories ended up having, It would also explain why Wakamo has such a big role in the Prologue/Tutorial and then completely disappears from the Main Story. For whatever reason this was scrapped and the Abydos storyline was moved or rushed to serve as the introductionary story. With a serviceable but less than perfect result.
This does raise the question of what the Abydos storyline would've been like in this alternative version. Perhaps it would've been similar to the Vol. 4 we ended up getting, just with Abydos replacing SRT. Perhaps the GSC would prefer Abydos to "naturally" disband. Maybe it officially has been, and Abydos team would be technically squatting at their own school.
(Related: a Student body of five people simply isn't viable, why doesn't [insert enemy here] just attack during night when FTF is at home sleeping, it's not like they have people for night shifts?)
