Responses
Thanks for looking into it - I was hoping to find the original volume to get some context, but I guess since it doesn't exist...
It is actually. It is a sequel of a one shot contained in this volume: https://www.mangaupdates.com/series.html?id=96879
You can read the Chinese raw of the original here: (starting from page 154) http://www.verydm.com/manhua/jiaozhiyuanmmqs
But according to bakaupdates, it isn't. Its not even a spin off or anything, absolutely no related series what so ever. Also seems to be completed with one volume.