Ore no imōto ga kon'nani itoshī wake ga nai Details Casts Posters Title Ore no imōto ga kon'nani itoshī wake ga nai Release Date 2010-12-31 Runtime 01 Hours 27 Minutes Genres Comedy Drama Production Companies Unknown Production Countries Japan Cocomi Naruse... ... Kenichi Narusawa... ... Megu Memezawa... ... Original Size (530x795) Original Size (530x750)