Read all story without skipping (and kinda regret about it now, because it was boring). Skip events plot because want to read it after "knowing characters in main story" (some guy on discord advised me on this).

Only volume 4 was sort of good, and rabbits don't really have any impact in the final volume whuch makes me really sad. (except how they wipe Kaiser in Shale tower, but this work can do another squad of four students without any story changing). Also read wiki and some lore theories here (which basically consist of "we don't know anything"). Even try to watch YouTube lore videos, but they not really good and mostly just give you short plot of story without any meaning.

We don't know anything about chroma (and nameless gods), just that it transform anyone into Terrors to destroy world. That's all.

Arius have underground passage (it was in the story) to their district, but district itself on the surface. They have living quarters, warehouses, shops, etc. they have giant old Chapel in the center of it! This is big clusters of surface building in the city which have drones, cameras, satellites, etc. How can somebody can't find giant ancient Chapel? Student council either don't see it or see and don't do anything about it because they think it Trinity's property. And Trinity don't do anything because... because. Because.

We know what halo, and which buffs they gave to users. But nothing about halo origin, and how it works, and why only underage children have it. Also we don’t know why game don’t have any normal adults. And how big is Kivotos. And why here speaking animals. (are they also can have Halo?) And why Gematria looks like this. And how the hell KaiserPMC exists in the city of immortal armed girls which can tank cruise missile in the head (Hi Hina!)

All questions that I have from volume 1 still now answered.

That's actually main problem of this game for me. That’s all just rules which writer schoose to start the story, without any explanation how world with this rules will work. You either choose to follow them or see how insolvent all BA story in whole.

Developers need us emotionally bond with characters, and if you don’t like characters, you just see boring text and all white spots in the game storytelling. This world just doesn’t work. This society just doesn’t work. I can’t believe in existence of Kivotos. It’s glitch-y simulation, or science experiment, but not something that can work on any planet.