Mio Imai is a character from the anime Ghost Stories. She is a shy girl who takes care of the school rabbit Shirotabi, and brings him back to life after he dies. (The infamous English dub changes their relationship by making Mio madly in love with the rabbit.)
This name is also Swedish in origin, originating from the children's novel "Mio, My Son" (Mio min Mio) by Astrid Lindgren. In Sweden this is a male name.
Male, Scandinavian name, Swedish and Finnish at leastIn Finland popular because of children's book Mio min Mio (Swedish)(Astird Lindgren), Mio my Mio (English), Mio poikani Mio (Finnish). http://www.amazon.com/Mio-My-Son-Astrid-Lindgren/dp/1930900236
One of Astrid Lindgren's, a famous Swedish childrens book author, very well-known books is called "Mio, my Mio" in which the main character Bosse comes into another world where he finds out he is a prince called Mio.