2003 July 17, Galen Musbach, “The Summer of Our Discontent”, in rec.arts.anime.misc[1] (Usenet):
What's up with Da Capo? Siscon and lolicon in episode 1, a catgirl later -- is the target market fetishists?
2006 March 26, Abraham Evangelista, “Re:Protecting the Children at anime cons”, in rec.arts.anime.misc[2] (Usenet):
Heck, it's not too hard to find incest themes in non-H these days. Bro/Siscon relationships date back even before the seminal "Revolutionar [sic] Girl Utena", and still crop up in today's harem styled shows like "Sister Princess", and the still hilarious "Majikano".
Perhaps you're wondering about what '80s anime would have thought of the siscon aspect. It likely wouldn't have been permitted as such a central concept on an anime TV show […] but the siscon theme was the focus of a relatively popular 1980s OAV series named for its main character, Ami.
2017 September 19, Dave Baranyi, “Fall 2017 New Anime Try--Out List”, in rec.arts.anime.misc[3] (Usenet):
“Imouto sae Ireba Ii” - Adaptation of a light novel with a strong siscon slant.
