Boys in Chains is a problematic example because it covers all types of 'chain' scenarios - slavefic, d/s and BDSM. Hard to determine what is going on from a brief image - so you either lump all of this type of sexual activity into the questionable consent category or you allow some ambiguity. which is why explicit vs non explicit might be the better focus and reserve consent/non consent for more unambiguous examples.

BTW, where do images of violence fit in? not sexual violence. I may have skipped past that part.