I'm not a big fan of Kagamine Rin and Len (the twins from Vocaloid) but of all the fanmade music video series, I find these ones the best.
When I first saw this video, I didn't know there was a continuation on the next part. There were a lot of versions of the fanmade music video but this was the first one I saw. Thought I'd share these vids with you all even if you're not a fan of Vocaloid (or perhaps even have no idea what they are).
Just sit back and enjoy.
First part
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This is what I think about the video. I'm going to assume that the song was actually a story about the Evil Princess based on the public's point of view.
Second part
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I cried watching this video. ;_; (Note: The voice in this video is not really Vocaloid-made but that's all right, I like the singer's voice in here.)
Last part
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The only thing that bug me about this video is the placement of the subtitles and the choice on font colours. But I'm guessing the person made this using Windows Movie Maker and not some expensive Video editing program. I couldn't find similar video with better subtitles.
If you watch till the end of this video, that's how the original characters looked like (original as in original mascots for the Vocaloid programs).
Vocaloid is not from an anime nor a manga, they're just voice/sound maker programs. That's why their voice sounded high-pitched and digitalized.
But fans are so creative in making them alive through music videos (fanmade/original songs) that caused most people mistook them as characters from an anime.