Height: 168 cm
Class: 2-A

One of Junichi's childhood friends, and is often seen with his other friend Masayoshi. She is unpredictable as she would punch Junichi anytime. She works part-time at a Family Restaurant to support her single mother. She is the main female character on the second arc in the anime. Kaoru is the second heroine of Amagami - Precious Diary.