先駆者： sm25406148 sm25684366 sm26287252 sm30102979 sm30614039 sm31168225 sm31948219 sm31974829 sm32040863 sm32084093 sm32087142 sm32096523 sm32105655 sm32130913 sm32455748 sm32653097 sm39268776 sm39329517 sm39364986 sm40199796 sm40312558 sm40774446 sm41706079 sm41716107 sm43582324 sm44920335
http://www.nicovideo.jp/watch/ss46185447
