"AKIYAMA-SAKURABA doubt" special site
This is japanese site.If you can read it,you can get interesting information,
(but thare are some only guess too ,pay attention to it)
SUGGOI SBERUYO!!(It is very slippy!!)
http://www24.atwiki.jp/sweatslip/?page=%E7%A7%8B%E5%B1%B1%E3%81%AE%E5%8F%B3%E6%89%8B%E3%82%B0%E3%83%AD%E3%83%BC%E3%83%96%E7%B4%B0%E5%B7%A5%E7%96%91%E6%83%91