I've just received a Love Letter. It may seem so usual, but not for me. I'm Kagamine Len , the mean, hostile and cold guy of Vocaloid High and I repeat, have just received a love letter. The words were so arranged and finely-written that I decided to gather up every girl in school and try guess who wrote it. Now here I am, pointing out confused and baffled girls and trying to find my ' Writing Cinderella '