Man, this shit's just becoming more and more forward. Pretty soon a series like this will start with
"I have an issue with my younger sister. She's constantly bouncing up and down my penis every night."
and the only reason it won't be hentai is because she'll have some stupid quirk like she can't see his dick or she'll get turned off, and that's the only reason she does it at night. i mean, fuck right there, that's gold.