Kureha Sakamachi

Age: 15 (Later in the anime 16) Kureha is the younger sister of Kinjirō, who is a first year in high school and loves wrestling. She is a member of the crafts club. After watching and following Kinjirō and Konoe, believing her a male pervert cross-dresser, attacks Konoe to reclaim Kinjirō, only to be quickly defeated in turn. After this incident, still believing her a male, she has fallen in love with Konoe, much to Kinjirō's chagrin. While tomboyish most of the time, she tends to try and act feminine when Konoe is around. (Source: Wikipedia)