ヴァンパイア騎士∼年上の優しい貴方∼

Damon, a vampire, has been secretly protecting Nancy for ten years to fulfill a promise to his fallen comrade, Paz. Nancy is about to get engaged to her seemingly gentle fiancé, Wayne, who is actually colluding with designer Fiona to steal her designs and manipulate her mentally.At the engagement party, Nancy is harassed by a client, and Damon intervenes to save her. As they grow closer, Nancy discovers Wayne's infidelity and theft.