Kagami Hiiragi is a high school girl in the anime Lucky Star. In the anime she is voiced by Emiri Katou. She has a twin sister name Tsukasa and is friends with Konata Izumi. The group of 4 is complete with Miyuki who knows Kagami because they are class reps. Unlike Konata she has somewhat of a consience but gives in when someone asks to copy her homework. Tsukasa pretty much relies on her for everything and ends up copying all homework like Konata.