A Hentai PC Game from mid-2006, 'Full Ani' appears to feature young magical girls and reminds me of a cross between Chobits, WordsWorth and Yamibou. The OP video may shed further light on the game. Despite being an 'H' game, the videos and images here are suitable for all ages.
Official Webpage: http://leaf.aquaplus.co.jp/product/fullani/
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