Shirona Muronashi aka Shirona-tan is a character designed by famous Vocaloid producer Lamaze-P. Evidently she is so popular that a group of fans decided to do a fan-made anime project. So
"Let's make an anime movie with Shirona-tan" was launched in October 2011.
The first anime video - "Shirona Anime OP" - is now available on YouTube:
http://www.youtube.com/v/9CmEgDBdkKs?version=3&hl=en_USHere is more from the
Crunchyroll article:
Shirona Muronashi is a 10th grade high school girl. Her height is 150cm and weighs 40kg. She belongs the rhythmic sportive gymnastics club, though she is non-athletic in sports. She doesn't like vegetables, but can drink vegetable juice.
The project still need more volunteer staff in the position of key animation, inbetweens animation, and background arts (landscape, building) for the future anime movies. If you are interested in supporting the project, please make contact with them via this from.
Sounds pretty interesting, and the OP is not bad at all! That sounds like a really fun thing to do.
<cough>Onion<cough>If only I could think of an original character and her group of friends that could be done with...
<cough>Mint!<cough>