Gosick is a tV series anime that premiered in winter 2011, produced by bones.

About the production: the story comes from a light novel, there are 24 episodes of about 24 minutes and its current status is "finished".

Its main genres are drama, mystery and romance, with themes such as Detective, Crime, Foreign and Historical.

On AniList, Gosick has an average score of 77%, a very good score, and appears on 127,257 users' lists.

Kazuya Kujou is a foreign student at Saint Marguerite Academy, a luxurious boarding school in the Southern European country of Sauville. Originally from Japan, his jet-black hair and dark brown eyes cause his peers to shun him and give him the nickname "Black Reaper," based on a popular urban legend about the traveler who brings death in the spring. On a day like any other, Kujou visits the school's extravagant library in search of ghost stories. However, his focus soon changes as he becomes curious about a golden strand of hair on the stairs. The steps lead him to a large garden and a beautiful doll-like girl known as Victorique de Blois, whose complex and imaginative foresight allows her to predict their futures, now intertwined. With more mysteries quickly developing—including the appearance of a ghost ship and an alchemist with the power of transmutation—Victorique and Kujou, bound by fate and their unique skills, have no choice but to rely on each other. (Source: MAL Rewrite)

Official synopsis from AniList.