PC ： http://the-dilemma-of-hedgehog.com/index.html 携帯： http://the-dilemma-of-hedgehog.com/mobile/http://www.amazon.co.jp/s/ref=nb_sb_noss?__mk_ja_JP=%83J%83%5E%83J%83i&url=search-alias%3Djp-music-tree&field-keywords=THE+DILEMMA+OF+HEDGEHOG&x=12&y=11
http://www.nicovideo.jp/watch/sm12164622
