小野寺理央

Character in Kateikyoushi no Onee-san.

Onodera Rio is a kind, but flustered, teacher who is hired by Sakura Touya's father to tutor his son, alongside her colleages Akizuki Sara, Amemiya Amane, and Shiono Nagisa. Unlike her colleagues, Rio is not a professional teacher and is instead training to become one.

She is a young woman with long red hair, typically wearing a suit with a skirt suit when teaching, though she instead wears a white camisole with a yellow skirt when in casual situations.

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