If you are referring obliquely to the reported 'under age rape anime', I would presume that since the prosecutor can say anything, true or false (remember this is not evidence), it would be OK to show anything, again true or false.
maybe a lwayer can inform us more in depth. btw, I was not aware that slide shows and mutlimedia stuff was allowable during opening arguments. I thought, from past experience, that the arguments were strictly verbal. The pics and stuff is all new to me, so I don't know what is allowable or not, or where the 'truth line' is drawn.