No? They published two volumes and the manga failed to meet whatever expectations the publisher had. That's all there is to it.
People really don't get how this shit works. Manga need to sale and grow an audience, if they fail to do so, they get axed. Some magazines are unforgiving, some are more lax.
This was never suited for a monthly magazine. It was too slow and meandering. Even its "main" selling point, the yuri, wasn't anything to write home about and could be missed. Hell, even notoriously slow Adachi and Shimamura took way less chapters to make it clear Adachi was in love with Shimamura, so the slowburn wasn't so great either.
I know how that works
I agree that is not really suited for monthly magazine, but since the story hinted a possible long arc since the beginning, I thought they can wait for a bit
if the next chapter is the last, then possibly the decision is already set like 2 chapters ago
also, I think your example of Adachi Shimamura is not quite right, since it is from novel, not straight manga
and it also got axed once before
other yuri stories that got axed early usually the full romance type or the romcom type
which is expected to not going to be running that long (like the first adachi shimamura)
but here, I was expecting at least they go to the adventure a bit before it got axed
up until now, this felt like it is just the prolog