 If you liked
Injuu Gakuen La Blue Girl
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 ...then you might like
Manyuu Hikenchou
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Both are erotic anime starring an attractive blue haired girl who is the successor of a skilled warrior clan. Both girls have a sidekick who pervs on them (Kaede and Nin-Nin) for comic relief. La Blue Girl is straight up hentai and while Manyuu Hikenchou has sexual situations it only shows boobs. Tons of them, though. I think if you like one you would like the other for sure.