A trailer for this month's PSP game Ore no Imouto ga Konnani Kawaii Wake ga Nai Portable (My Little Sister Can't Be This Cute Portable, or Oreimo for short), releasing from Namco Bandai in Japan this January 27. Like last autumn's TV anime series, the game is based on the comedy light novel series of the same title, authored by Tsukasa Fushimi. The original story follows the 17-year-old high school boy Kyousuke Kousaka, and his cute and popular younger sister Kirino, aged 14. The two haven't been getting along in years, until one day Kyousuke discovers that his sister is not only an otaku, but even a fan of adult games - when he finds such a game called Imoto to Koishiyo! (Love with Little Sister!) hidden inside an innocent-looking anime DVD box, which Kirino had dropped by mistake.