"Living in this apartment, the two of us in possession of books will certainly be under considerable surveillance, so for some issues, I can only inform you in such a way.
About the 'Nine Commandments Society,' I can tell you their purpose.
But remember not to spread it, as even other mystical practitioners would find it extremely dangerous upon learning of it.
This is the only thing you need to be careful of.
As far as I know, the 'Nine Commandments Society' adheres to a strict hierarchical structure, with organization members scattered all over the world, constantly searching for and collecting books that have not yet been discovered by others.
And their ultimate goal is to plunge the world back into the ignorance of the Dark Age and onto the path they deem 'correct.'
Moreover...
It is only my speculation.
Lately, people from the 'Nine Commandments Society' seem to be consciously heading to Grid, and Her Majesty the Queen appears to have tacitly approved of this.