DNAngel 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 thief Dark whenever he experiences romantic feelings. This transformation is tied to a family curse that has affected the Niwa lineage for generations. The plot revolves around Daisuke's struggles to control his transformations while navigating his feelings for Risa Harada, a girl he likes. The series combines elements of fantasy, romance, and adventure, exploring themes of love, identity, and the challenges of adolescence.