In comparison to all the other junk on this site, I would be so surprised if DA signaled you out for this. Obviously it contains a mature theme however there is not anything inappropriate visible yet like another said, you could always make it mature just incase. I would hate for you to be banned again.
Thanks for showing this sketch...so before you started on this piece of paper, you sectioned it out with a ruler, sketched then inked over it?
Amazing work as always. I love the detail and the emotion you put into your characters. I can't wait to see a color version of this piece. I would put "Mature Content" to be safe. Personally this drawing is only PG13...which shouldn't be a issue if a little kid see this. Like everyone said above, there no nipples or genitalia. If you get ban for it, they should explain a little better what is "Mature content". Good luck and i hope you don't.