Also known as: 漆黒の騎士王ver新宿1999
An alternate costume of Saber Alter in Fate/Grand Order. The qualifier is a shortened form of the full name, Jet Black King of Knights ver. Shinjuku 1999.
The costume consists of Shorts, Thigh Boots, Black Jacket, black Sleeveless Shirt, Necklace, and her hair tied on a Low Ponytail with a Black Ribbon.
Officially made available on February 1st, 2020.