Ruka Souen (早園瑠佳, Sōuen Ruka) is a female student of the Night Class, popular among the Day Class males, and is also one of the most faithful, protective and loyal of Kaname Kuran's followers. The meaning of her name: In Ruka, the ru means "Lapis lazuli" with ka being "good looking" or "beautiful". In Ruka Souen's surname, sou means "early" but the kanji also has an obscure meaning, that of "strong fragrance" while en stands for "garden".