Mars 

Kira, a shy high school student, lives only for her art. Rei, an arrogant, rebellious and violent playboy, wears his delinquency like a badge of honor. They are exact opposites in every way, but when Kira sees Rei kissing a statue of Mars, she overcomes her fears and asks him to model for her. And, to everyone's surprise, Rei agrees. (Source: TOKYOPOP)