Okay, a long while back, before batoto had a nice quick follow button, there was a dojinshi of madoka magica that had Homura as a main in a silly spin off.
Basically the manga revolved around what if Homura went a little crazy after trying to save people hundreds and hundreds of times.
She started being silly and the comic referenced popular manga/anime of the time such as Suzumiya Haruhi along with others.
Thanks for anyone that can help out.
P.S. For anyone that hasn't read the manga in question I highly recommend it for a laugh at what is actually a very good anime and manga series.