While exact details are coming later from Dengeki and Nico Nico webcast, @kirino_kousaka and @kuroneko_daten have been Tweeting and bickering about a crossover between Tsukasa Fushimi and Hiro Kanzaki's Oreimo and their newer light novel series Eromanga-sensei, the fifth volume of which is scheduled for September 10th. Fushimi will write the mystery project, tentatively titled "Majority Drama." 

Ero Manga Sensei - My Little Sister and the Locked Room follows the contentious relationship between a light novel author/highschool student and his demanding, hikikomori younger step-sister... who is also secretly the illustrator on his novels.

via @yusa_yusaan

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Scott Green is editor and reporter for anime and manga at geek entertainment site Ain't It Cool News. Follow him on Twitter at @aicnanime.