She was hiding in an empty classroom, watching with disdain at the dumpster fire that is the male student body tripping all over themselves for her hand at the ball, when a certain redhead approached her.
That is to say, she hung from the ceiling upside down, spider-man styled.
"Hi." Mayumi Hirutazu cheerfully waved, "Would you mind if I invite you to troll three schools at the same time," From her wrist she summoned a yellow rose which she presented with exaggerated grace, "And be my partner in crime?"
The young woman looked out from the corner she was hiding in, out towards those idiotic boys, then gave the idea some thought.
"I don't zee why not."
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If my memory serves, yellow roses symbolise friendship.