Talk:Ogata Haruna/@comment-90.223.205.138-20141023063544/@comment-86.159.91.47-20141023164148

It's just a joke made by Tsunku. These's a famous Enka singer named Ogata Daisaku (尾形大作) who has the same Kanji for 'Ogata (尾形)' as Haruna. Hence, the nickname Daisaku.