Re: Episode 1
Heh, Akiko wears an "I <3 Imouto" shirt.
Anastasia is currently Best Girl. Haruomi is good too and I'm sure she'll get some great scenes in the future, she's just.... so normal compared to everyone else. Then there's Arashi, who flat out said she's happily take EVERYONE'S virginity.
And of course, there's Akiko. I don't think any other imouto has wanted her brother's dick so badly. Her futile efforts (and irritation at their failure) are quite fun to watch.
Also, as of this point, only one character (grey haired Haruomi) has a personal name that doesn't start with "A".
Avatar: Kuroneko (Ore no Imouto ga Konnani Kawaii Wake ga Nai)