Mio Ashioki

She is the older sister of Ashioki Oushi. She works at a nursing home. She is 23 years old and has known Itose Yuki since childhood. She wears her hair chin-high in a bob. She has narrow eyes and a face similar to Oushi's. She has been interested in sign language since she was a child. She has been interested in sign language since she was a child and often spoke with Yuki in sign language. After she stopped using sign language, she had almost forgotten how to use it. However, when a deaf person moved into the facility, she decided to learn sign language again and began to communicate with Yuki again.