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PSP Ore no Imouto ga Konna ni Kawaii Wake ga Nai Portable is scheduled to release on January 27, 2011.
The limited edition contains:

1. Special "Ore no" Imuto to Koi shiyo♪ Box with newly drawn illustration for the box.
2. Newly written short story for Oreimo P by Fushimi Tsukasa-sensei (the author) and Game development material book (artbook)
3. Collaboration with anime, Special Compilation Anime DVD for Oreimo P
4. Game UMD "Ore no" Imouto Maker EX Imuto to Koi shiyo♪ Portable
5. Each type of stick poster with newly drawn illustration for the game
6. Game UMD Oreimo P