Place of Origin: Germany
Astronomical Namesake: Milky Way (German: "Milchstraße")
Martial Talents: Fencing, Battlefield Tactics
Koubu-Kai, Koubu Nishiki/Eisenkleid Unit

Color: Dark Blue
Weapon: Lance

Birthdate: December 24, 1909
Age: 13-16
Height: 147 cm (4'10")
Weight: 38 kg
Blood Type: O
Theme song: "Icarus no Hoshi" ("Star of Icarus")

As a young child in Germany, Leni was part of a program that created high spirit power children called "wunderkind" (translated from German as "Miracle Child"). Because of that project, Leni is so distant and tomboyish that everyone initially thought she was a boy. With Oogami and everyone elses support however, she becomes more open, and gets along well with Iris. Mentioned in the ADV Sakura Wars TV pamphlet Leni has great battlefield tactic knowledge and is a gifted ballerina. It is possible that she is named after Leni Riefenstahl, a German filmmaker whose most famous work was "Triumph of the Will".