Maybe not. They could try ending it at Chapter 14, right before the training camp.
That would mean the anime would only adapt three volumes in one season. Most TV anime adapted from manga usually cover 4-5 volumes of the source material. So the adaptation 'could' end at chapter 14 but the pacing would be downright soporific considering the already leisurely pace of the manga.
I'm more than a little concerned about how [ending the anime on the reveal that the titular monster does not want to eat the protagonist] will be received by first timers
Why? o_O
Because without everything that follows up this twist in the manga it seems like an unsatisfying end to a story. Most anime adapted from a yuri manga suffer from the no-second-season-curse, and in this case the source story reaches it's central twist right where the first season of the anime is likely to end.