Well, you are right, I just remembered one real rape. In Finder Akihito and the Russian mob. Funnily enough, this rape confirms that the rapes by the other protagonists (Asami and Feilong) is different. Akihito falls in love with Asami and likes and respects Feilong. There are qiute a lot of stories where we can see children being abused in their families in their background stories, these do deal with the emotional impact to a certain level. But the majority are just quite a lot of those "rape"-turning in the relationship stories? What I have a bigger problem with are age gaps where one of the protagonists is a child being kind of groomed to stay and fall in love with an adult in their vicinity. When I take Junjou Romantica (and that is a mild one, can´t remember the others), the younger one is supposed to be a high school student but acts like an 8 year old. And no matter how many "cute" and funny moments there are and that the characters are likeable it is still something cringy. In our culture it is a no-no since it kind of leaves you with no choice? Using the fact that the child just has to rely on somebody.