Miyu is one of the two children born to Jiryu and Teika. She is their youngest child.

She wants to continue her father's legacy as the protector of the valley and she goes out of her way to do so. She is close to Tanjiro and she enjoys spending time with her siblings. She is talkative and observational. She is chipper and eager.

She is close to both of her parents and she is often torn between doing what her parents want and trying to prove herself worthy of her father's family's name.