The titular younger sister—a talented athlete and model with a hidden obsession with eroge.
It is noted for an art style that closely mimics the official anime character designs.
A fellow otaku and rival to Kirino who becomes a major love interest and central character in her own spin-off manga.
Ore no Imōto ga Konna ni Kawaii Wake ga Nai (English: My Little Sister Can't Be This Cute ).
Kirino’s best friend who initially views otaku culture with extreme contempt.
Oreimo Plus is an adult-oriented love simulation parody developed by the doujin circle .
It explores the balance between fitting into normal society and embracing niche hobbies, as well as the complicated (and controversial) relationship between siblings.