yes according to the fanbase, the real story was about how a kid should be a kid because, in BA's situation, the girls forced to be deal with an apocalyptic situation, and the player plays as Sensei who had the authority of an Adult Card(aka credit card).
well, all girls are high schoolers. so it is not wrong,
btw Arisu, the girl with long hair, is actually a killing machine robot in a bad end timeline,
but in the Player's timeline, she becomes a dork robot because the GDCs found her and influenced her to become an RPG retro-addicted gamer to the point she becomes cunnybyou.
so actually that dork club actually saved the world.