@Raydnt
the chapters translated in english means nothing, because anime is primarily made for the japanese themselves.
You can tell number of volumes in raws by clicking on the mangaupdates link : and look under: Status in Country of Origin .
(even if you feeling too lazy to do that, you can easily tell from the number 5 shown on the cover page here that this manga has 5+ volumes so it's much more than 8 chapters)
I checked and found this manga has 6 volumes in raws so length-wise it's possible; though content makes me skeptical of an adaptation (maybe just some OVAs?).