Rent D.N. Angel (2003 - 2003)

DNAngel is a Japanese animated drama series about a teenager who discovers he has the power to transform into a different person. The series follows Daisuke Niwa who discovers that he has the power to change into his sinister alter ego Dark. The series follows Daisuke as he tries to control Dark and protect his secret from those around him, especially Risa, a girl he is in love with but unfortunately may have grown attached to Dark instead of him.