|Translation||Valley Lily Council|
|Headquarters||St. Marian Girls Academy|
|Affiliation||St. Marian Girls Academy|
Taniyurikai (Literally meaning "Valley Lily Council") is a girls gang based in St. Marian's Girls Academy, who have taken over west Kantō.
- The Taniyurikai is based off the student officer organization Yamayurikai (山百合会, Yamayurikai) in the light novel series Maria-sama ga Miteru.
- All three known members are also based off their respective characters in the Yamayurikai's Rosa Foetida Family.
- Both the characters in Maria-sama ga Miteru and the Taniyurikai were also voiced by the same three voice actresses: