Those who follow manga may be familiar with Nana to Kaoru, which I would describe more as S&M than DID. Nevertheless, for those who might be interested I discovered an image archive of the 1-episode Nana to Kaoru OAV here:
http://www.fansub.tv/series.php/1824/Nana_to_Kaoru
Nana to Kaoru OAV
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