I never thought Wriggle would have an antagonistic role, but her power while low on the touhou spectrum could pose a serious threat to normal human characters.
Have I gone completely bonkers or weren't there more chapters to this story at one point?
I can't seem to find it anywhere now, but I remember reading something, same characters with some old girlfriend of Vega's showing up.
This is actually a prelude to the series that you are talking about. The name of the original series is Puberty Organism Vega and it ended at one volume with a drama cd released as well. i managed to find chapter one in spanish and chapter two in japanese and the drama cd tracks in japanese. It would amazing if someone could translate the original series since it seems to have a good premise.
Do you need the raws for this series? I managed to find raws up to volume 6 and since this series is one of my favorites, and it has not been updated for a while, I would like to offer whatever help I could.