Bon Bon is a hard-boiled detective in the peaceful Canterlot City. Her attention is captured by a string of cases involving the appearances of mysterious flash drive devices called Gaia Memories, the Dopant monsters they turn people into, and by the enigmatic Lyra, who appeared just before the cases began. Together, Lyra and Bon Bon use the Gaia Memories to transform into the half-and-half hero, Kamen Rider Double, out to track down the Dopants and to stop anyone who may try to make this city cry.

(Kamen Rider W crossover; EqG-style humans.)
(This story is most conveniently read in Indented format instead of Double Spaced.)
(The chapter labeled “(Noncanon Draft)” is just that, an early draft of scenes that are now noncanon to the story, but they’re still well-written so I’m keeping them up. The rest of it is the actual story.)