Images of adults imitating children (to near perfection) in sexualized context is absolutely a valid reason.
I am not kidding when I say this, please seek out a therapist.
Are you assuming every single one of those images is sexualized? Because some of them are mere images of them dressed as schoolgirls, posing in a suitable environment and not necessarily doing anything sexual. Not all of it is sex appeal.
Also, are they really imitating children for the sake of imitating children or are they just doing the character justice by portraying them the best of their ability?
You posted an awful lot of pictures showing off underboob. I don't know why you're even trying to play pretend that those pictures weren't meant to be sexualized. ---