I! My Sister Is Sherlock Holmes

When I woke up in an unfamiliar room, the person before me was a breathtaking blue-haired girl who claimed to be my older sister.

A city of the dead with no way out. We were told that everyone in the city, except us, was a vicious murderer.

This is the story of 221B Baker Street. To learn the truth and escape this place, I, Watson, will do everything I can to survive.