User blog comment:TheRecollectiveWoman/Thoughts on Life and Stuff/@comment-142.255.234.124-20131105001555/@comment-6192846-20131105142423

I have similar doubts. Seems like a lot of work to coordinate songs, plot ideas, and concepts between song producers (notice how mothy has done few collaborations and they are all non-essential story components to the Evillious plotline). Sure, Bad End Night might draw upon some of the themes and ideas of the EC, but that's only natural. mothy's a popular and creative producer and largely successful with his series. It wouldn't be a surprise if other series were partially inspired by his, to a lesser or greater extent.

But, you never know.