She is embarrassed of her own name "Sapphire" (緑輝, Safaia, lit."green brilliancy") , so she tells people to call her "Midori".
Fordi hun synes, at hendes navn "Sapphire" (緑輝, Safaia, bogst. grøn glans) er pinligt, beder hun folk om at kalde hende Midori (japansk for grøn) i stedet.