Has there ever been a light novel anime that's actually fully covered it's material? Pic sure as fuck not related, but It seems like way to many anime based on these books ends up just before even the prologue is starting.
Supposedly Rokka did cover almost word-for-word volume 1 with season 1. I know I enjoyed leaping off from that without having to double-back.
These days I spare myself the trouble and just read up to where the latest episode ends.
There exists at least one anime title that covers light novel series entirely, with all subplots and main plot resolved.
There is sequel novel series with same characters but that should not matter.
Horizon is moderately popular. People know about it. Students at my Junior High had heard of it at least.
During the anime series the LNs did receive a sales boost and it sold pretty consistently around 20k BDs per volume.