@Kusarin
If I'm not mistaken, the reason this series was discontinued was due to the author's health.
The silver lining to it; however, is the fact that the author managed to wrap it up with a neat bow despite having not been able to cover all the arcs.
Who knows, perhaps if their health improves they may pick it up again. But as it stands, the author did well in prioritizing their health.
Although I can easily say that this series became a favorite of mine.