the character is a teenager, that’s the biggest issue here.
Pretty difficult to see a mainstream anime/manga that doesn't do that in some level. I don't think that this is okay, but we need to recognize that this is a much bigger problem.
a situation like this being depicted to an adult
Well, technically Dandandan is a Shounen, made for teenagers. I have more problems with an adult drawing that, actually.
But anyway, I don't believe that the eroticism in ero-guru is made to make viewers horny, on the contrary.
Sorry, little experience with immutable systems, I didn't know they could update without a password.