D.N.Angel is a Japanese manga series written and illustrated by Yuki Narumi. 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 Risa Harada, a girl he likes, while also dealing with the challenges of being a thief. The manga explores themes of love, identity, and the duality of Daisuke's life. It features a blend of fantasy and romance, with Daisuke's adventures as Dark intertwining with his everyday life. The series has gained popularity for its engaging characters and unique premise.