D.N.Angel is a Japanese manga series created by Yuki Narumi and illustrated by Mitsuki Nishikawa. It follows the story of Daisuke Niwa, a 14-year-old boy who transforms into the legendary phantom thief Dark whenever he experiences romantic feelings. This transformation complicates his life as he navigates his feelings for his crush, Risa Harada, while also dealing with the challenges of being a thief. The series blends elements of romance, fantasy, and adventure, showcasing Daisuke's dual life as both a normal boy and a master thief. D.N.Angel has been adapted into an anime television series and has gained a dedicated fanbase for its unique premise and engaging characters.