Futaba Shimamura

The owner of Izakaya Futaba. She is the younger sister of Ichiyo and the older sister of Mitsuha Unlike her siblings, she has no interest in Kamen Rider. In the past, Ichiyo's excessive love of Kamen Rider led to her being ignored by those around her in elementary, middle, and high school, and she was unable to make any friends, which is why she hates Ichiyo.