Squashed commit of the following:

commit 21ce3b6148beef05adc92a1a07fd648a4af36ed1
Author: gaku <dirablue@gmail.com>
Date:   Mon Jul 21 04:26:18 2014 +0900

    modified d

commit efd7f22779e67059e84590d98cf121dd07f9741a
Author: gaku <dirablue@gmail.com>
Date:   Mon Jul 21 04:25:56 2014 +0900

    create d