Characters:
Yukiko Amagi
Chie Satonaka
Rise Kujikawa
Naoto Shirogane
Ai Ebihara
Yumi Ozawa
Ayane Matsunaga
Eri Minami
Sayoko Uehara
Noriko Kashiwagi
Saki Konishi
There are actually more female characters, but I doubt anyone would want to include them in fics, so this should be plenty.