User blog comment:WhitzellBlood/THE WILL OF D/@comment-4117216-20110708133707

I think the D means happy face =] People with the will of D always smile. Roger and Luffy smiled before they were to be executed (Luffy ofcourse lived) Ace also smiled and was happy with his choice to save luffy. Dragon, as we remember doesn't smile often however did when he saved luffy from smoker.

The will of D =   =D (happy face)