Fate/Extra CCC Fox Tail

Fate／EXTRA Gone Wild! Casko? (Fate/EXTRA みこーん! キャス狐ちゃん!?) is a manga series based on Fate/Extra and Fate/Extra CCC. Differing from the original Fate/Extra manga which follows the regular plot of the video game with Saber as the Hakuno Kishinami's Servant, the main Servant is Caster and has a different plot line. It includes a elements from CCC, unused Alter Egos Violet and Kingprotea, and an original Master and Servant who kill Kirei Kotomine, Monji Gatou, Kiara Sessyoin, and Caster.

Characters
Unknown Master and Servant - The unknown Servant is a female who uses a Japanese sword that is able to be launched at the opponent and flies back to her automatically after leaving a large hole in the opponent's chest. It floats by her hand without her needing to grasp it.