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AbuHajaar: The other series isn't axe'd, its still ongoing with recant raw (Chapter 22) being released around 2 weeks ago.
As for this series, its been out for 2 years now and had 24 chapters in raw.
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Apokus: Maybe this adaptation is supposed to be any alternate take, which quite a few series have, like the "The Apothecary Diaries" for example which also has like 2-3 Manga adaptations. Though for that to happen, the series has to be quite popular.
Also, it seems that this series is a a lot less ecchi than the other one (with the only female full nude scene being in this chapter, based on the raws i checked), as the dress of the female characters are not sexual or focus on the figure (like that Sister's dress for example). There seems to be less sexual jokes or sexual harassment situations as well, and a lot less bloody. Aka., this adaptation is a more toned-down version of the other one.