NO, it is not finished.
We found unfinished core content:
Gosick: gray wolf tanteisha-hen (Sequel)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Gosick follows Kazuya Kujou, a Japanese transfer student at a prestigious academy in Sauville, who finds himself ostracized due to his appearance.
His life takes an unexpected turn when he encounters Victorique de Blois, a brilliant but enigmatic girl with a doll-like appearance, hidden away in the library.
Victorique possesses a remarkable ability to piece together seemingly unrelated facts and foresee future events.
Together, Kujou and Victorique become entangled in a series of mysteries, ranging from ghost ships to alchemical secrets, forcing them to rely on each other's unique skills and growing bond to uncover the truth.
Their intertwined destinies lead them down a path filled with intrigue and danger as they navigate the complex world around them.