From Taruby's site:
This is Nekobyou Neko's second serious work after her yonkoma manga series "Ittan Neko", although meant to be a single oneshot story, it later spawned additional stories using the same cast of characters before fading into obscurity. The first three chapters go by the title "Mahou Zakkaten Vi Via" while the last two go by the title "Bishoujo Mahou Senshi Catling".

NOTE: Since this story is relatively unpopular, only magazine scans are available, hence the poor quality.