One of my favorite mangas has been needless for quite some time, always been a fan of the art style and humour; probably why i love aiki so much. Putting that aside, i decided towatch the animated version recently and they actually did the mini series where cruz disguises himself as a girl to infiltrate an all girls academy.

http://www.nwanime.com/search_result.php?search_id=needless&search_type=search_videos&search_for=all

Its "needless special" if you wanna check it out.

Note: there is no porn, its strictly crossdressing with some very well done humour
also I dont think this would violate the tos since the main character and a few others are rather young [exact age not rly given but someone like mio] so if it does feel free to remove this thread.

edit - rly tired messed up on the genre