Thread:Anzan/@comment-27464072-20200124194151/@comment-43281069-20200206230759

Actually there's a lot of references in those titles:

Fantasy Soul Crossover: The title is directly taken from a line in the Kamen Rider Build/Best Matching Precure theme song.

Pixel Panic Crossover: Yu-Gi-Oh reference (that's basically what the title literally translates to anyway)

Pixel Panic OVA: Reference to the manga/anime World War Blue which the plot is sort of based on.

Pixel Panic movie: Reference to the movie Raiders of the Lost Ark

Fusion OVA: Reference to the movie Full Metal Jacket

Fusion movie: The plot you described is basically a Super Hero Taisen movie with Precure tacked on so I named it accordingly.