Don't call me a simp. Call me a useful tool! A simp ends up with nothing, but tools... well, there are all kinds of them., Ye Zi
A multiverse story, currently featuring StarCraft, Date A Live, Devil May Cry, A Certain Scientific Railgun, Rozen Maiden, the Doom series, Love, Chunibyo & Other Delusions, Dead Space, and Demon Slayer.
P.S. An imaginative attempt to use things from one world to explain things from another.
P.P.S. Some settings have been adapted to fit the background, so don't assume they match the original works.
P.P.P.S. It takes a while to get going, and the plot moves slowly, so you can wait until there are more chapters before reading.