|Family||Kousei Arima (son)|
Takahiko Arima (husband)
|Japanese Voice||Mamiko Noto|
|English Voice||Wendee Lee|
Saki Arima is the mother of Kousei Arima. She was a well-known trumpeter across Japan before her death, that would severely effect Kousei's playing style for the next two years.
Saki Arima was usually depicted sitting in a wheelchair. She had short down to shoulder length chestnut brown hair, and had navy blue colored eyes. In some parts, she is seen with medical tubes for her illness.
Saki is Kousei's mother who inspires Kousei to play the piano. While she did not plan to make Kousei a pianist at first, her realization of Kousei's talents and her own illness made her decide to give Kousei a foundation in playing piano in order to be able to find his own style, and make a living, afterwards. She died before Kousei's qualification to what supposedly was his first competition.