 If you liked
Yubisaki Milk Tea
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 ...then you might like
Bokura no Hentai
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While yubisaki is following one kid through high school while doing all sort of things, incl cross dressing, bokura no hentai focuses on group interaction. Both have really interesting takes on gender and cross dressing, though I'm guessing that LGBT-activists in general might enjoy bokura no hentai better with it's more strict foucus.