Detective Opera Milky Holmes: Alternative(2012)

Tantei Opera Milky Holmes: Alternative

Milky Holmes is a detective team composed of four girls who descended from famous detectives and possess supernatural powers known as "Toys". In this alternative world, instead of losing their Toys and becoming worthless students, they are on the path to becoming successful detectives. Under the guidance of Kobayashi Opera, they work to solve mysteries.

(Source: AniDB)