I wouldn't be surprised if it's come up on a one-on-one basis before - I picked up a lot from Kanji before we even got here, once he had Margaret-san explain it to him. But this is quickly becoming really, really important, so getting the word out as much as possible before everyone who understands it gets stuck infiltrating would be a good idea.

[Or, you know. It's only Souji and Adachi investigating, and they're too busy sniping at each other to do anything useful.]