Promise: It's an habit of myself to read the manga / light novel only to the point which the anime adapted it.

Due to the delay of 86 I've decided to read the first volume;

With an incredible stroke of luck I didn't read the whole volume until yesterday night, avoiding the incredible Spoiler at the end of it (for those who don't know, essentially the last 5 minutes of the Saturday's episode was written there)

So, my question are:

• How many volumes are adapted?
• There are any spoilers like the one quoted before? (I'm curious about some aspects of the 86 world, but I don't want to get caught in some spoilers)

Glory to the spearhead squadron!