Kotoko
From Kokorodatabase
The mother of Mizuhara Minoru and a former member of the Black Soul. She has worked at the Beaumont Flower Shoppe with Elizabeth Shirogane since the two were teenagers. She has been described as having black hair up in two odangos with hair spilling out from them. Her bangs have streaks of red. She seems to have been one of the main supporters of Shirogane Jishou and Elizabeth getting together.