A spinoff of Ore no Imouto ga Konnani Kawaii Wake ga Nai following Kuroneko's route. This manga is a new story based on volume 15 and 16 of the Oreimo lightnovel written by the original author Tsukasa Fushimi. Not to be confused with Ore no Kouhai ga Konna ni Kawaii Wake ga Nai, which is another spinoff.

After entering an all-boys junior high school, Yuuto-kun resolves to become more manly; and after reading a manga about a hot-blooded, all male cheer squad, he decides to join up with his own school's "Cheer club." However, the cheer club is not exactly as he expected it to be...

Kanata Tsukishiro's dead twin sister frequently takes possession of him, and so he asks Yumeto Ookawachi, who his sister had a crush on before she died, if he would help her to pass on.

"I have a fiance...?"One day, Higashi Kujou Hiroyuki, an ordinary high school student, is told a surprising fact by his father about an arranged engagement.His fiance is Kiryu Ayane, the "Villainess" at school, known to everyone for her sharp tongue and coldhearted personality. A heartwarming love story of two high school students that melts the icy heart of a "Villainess" begins!+