Tsukihime dj - Tsuki MATRIX

[MangaDex]

 

[DJ Eme]

I don't know what this is but how could it have been published a year before the source material?

 

[ZuuIk]

I don't know what this is but how could it have been published a year before the source material?

It’s based on the Visual Novel Tsukihime rather than the manga, and thus predates it a bit, but is still a doujin of the story