Pai Slash is an emerging genre of Japanese Moe/Hentai element established since 2006. Pai slash means Pai(Oppai)=Boobs are divided by /(slash). The word describes the situation that shapes and size of boobs are emphasized by shoulder bag belt or seat belt placed between the cleavage of each breast.
Movement has been slowly known as some events were organized. From 2011, the recognition has been widely spread as some commercial magazines organized special sections for Pai Slash.