Talk:Ijiwaru Shinai de Dakishimete yo / Hajimete wo Keikenchuu/@comment-9554921-20131111155221/@comment-131168-20131111161355

Hmm. Not exactly like this, but I can think of some similar things. Occasionally someone will show up as a guest vocal on another group's album, like Okai Chisato and Hagiwara Mai in [7.5 Fuyu Fuyu Morning Musume Mini!]. And Berryz Koubou were backup dancers in a few W videos.