>>24839
This is pretty interesting to hear, because when reading your story I assumed that they are not enjoying what is going on either and are getting raped. They may have some masochistic enjoyment or indifference but I was not expecting lewd expressions on their faces.
Looks like I got wrong idea from reading those stories :)
So on that aspect probably you should consider improving your writing techniques to express those emotions better as at least to me that would look pretty nice. :)
Probably in this kind of content it is pretty hard to to actually understand whats is going on so we all make our own guesses.

To me, when something involves adults I do not expect much of fun from. They are way to serious, not very playful like children and there is no that usal childish excitement.
but 16 is pretty good age.

speaking about those pictures I assume that girls in them can be also close to 16 maybe 11-13 since don't forget that it is anime style where ages and looks can be shifted and proportions are not realistic. At the age of 16 you are already defeated demon king, saved the world and retired LOL
Also because their eyes are relaxed and closed they are enjoying it somewhat if they were suffering they would have them fully open.
But anyway this is pretty much just my opinion and extrapolation from other images of that same artist where girls seem to be quite enjoying being mistreated.

>>24838
To clarify the situation I did not post those images as illustrations for existing stories posted them as different stories that fit this story universe in my opinion
As in general ever L story here is pretty much just a single image like that in the text form.