Gotou Hidekado wrote to share his paintings and blog which are located here. According to this previous post over on the awesome Monster Brains blog, he was a rapper since the 1990s who decided to start drawing in 2003. Monster Brains also links to an additional gallery here.
EDIT: Gotou wrote to say that though he did create music, it was not rap. But he does not mind because it is in the past.