Our future depends on ourselves.
Miss Holmes: The Lost Earl
Type: suspense crime adventure
Online time: September 2020
The story takes place in 1884, and Einola is preparing for her 16 birthday. I don't know. On this day, her mother disappeared. After the famous detectives Charlotte Holmes and Mycroft became the guardians of Einola, a series of events happened.
As an original derivative, it is quite interesting. The timeline is set before Sherlock meets Watson, so apart from the Sherlock brothers, only Lestrade plays a role in the original.