Yurigaoka Girls' Academy

Yurigaoka Girls' Academy (百合ヶ丘女学院) is a Garden in Kamakura, Japan.

Schutzengel System
Yurigaoka's high school division has an officially recognized tradition where an older student will make a pledge of sisterhood with a younger student, in which the two pledge to support and protect each other. The older student is known as the Schutzengel (German for guardian angel), and the younger student is known as the Schild (German for shield.) The pledge itself is known as the Schutzengel's Oath.

Any student in Yurigaoka's high school division can make this pledge, even with students in other courses (e.g. a Lily can be an Arsenal's Schutzengel, or vice versa) and other legions. However, one cannot take the Schutzengel's Oath with a student at another school, or a Yurigaoka student who is in the same school year. Each student can have only one Schutzengel and one Schild.