A , or , is one of three senior members of the Yamayuri Council, although it is also possible to generally speak of all the members of the Yamayuri Council as roses. A Rose makes the important decisions within this group, since she has control over the student council. Candidates for the position, which lasts through the school year, are chosen through an election. Any student can run to become a Rose, although the position is usually given to the "en boutons", the Roses' "petite sœurs".