Responses
None that I know of. Planning to take it into my own hands to create some eventually though. Even regular anime/manga barely have any, I can count the no. of transmasc characters in manga with 1 hand and most of them aren't even main characters.
this is the only one I know of: http://www.mangago.zone/read-manga/yuureitou/ but I haven't read it, personally
Please we need representation