May isang babae at lalaki na magkaibigan pero isang araw nainlove si babae kay lalaki at doon na umamin si girl na may gusto siya kay boy pero si lalaki nireject lang niya iyon and ano kaya ang mararamdaman ni babae masasaktan ba o magagalit?

Yang Y/N-The girl who fell inlove with his vampire best friend. Park Sunghoon-The boy who fell in love with his best friend. Yang Jungwon-Y/N's cousin and he knows about Sunghoon too. Our friends Lee Heesung Nishimura Riki Jay Jake Kim Sunoo Actually, Sunghoon and Y/N are childhood friends. And Y/N knows that Sunghoon is a vampire. So Y/N protects Sunghoon everyday.