Docchi and Steam Trap are both ecchi trap manga with androgynous boys who are forced to crossdress. Both manga have very slight implied relationships although Steam Trap's is implied shounen-ai while Docchi has an implied heterosexual relationship. Both manga have notable ecchi and attractive looking characters.
Otomegokoro no Jiyuugata and Docchi are both trap manga with very androgynous, cute boys who were forced to crossdress by a female. Docchi, however, contains more ecchi than Otomegokoro no Jiyuugata. Both of these manga have attractive, cute artwork. Docchi is a oneshot.