If you liked the Our Nishizaki Cavalry Corps manga, the Anime-Planet community thinks you'd like:
Both of these are gender-bender one-shots about a guy who is forced by his friend(s) to crossdress, resulting in a sexual scenario. If you enjoyed one, you'd like the other as well.
Both of these one-shots are about a male child who is forced into crossdressing by their freind(s), which ends up getting the coerced crossdresser into an unwanted sexual scenario.
Both are also pretty terrible if you ask me, but crossdressing fans should find something to like in these.