You had a peaceful life, had a healthy family and have one loyal friend. Named Park sunghoon, you guys met at your favorite place alone but sunghoon know's about this and that's were you guys became friends. You were 6 and he was 8, 2yrs age gap. But you and your family at the car going some family time going somewhere but out of nowhere a truck hit your car and all suddenly went crash. You were the one who only survive your parents pass out. Well you had to live with park sunghoon his father's name are mr. Shi rum. And his mother's name are Ms park minj you often call them auntie and uncle they had a nice nanny they are rich too. You had to live with them but not knowing they are vampires but, they are kind nanny auntie uncle sunghoon too, but when he heard that your gonna live here with them he was excited and happy. But when you says "we are going to be a family." You often call him brother but he hates it. You keep chasing him as in like being kind to him and patient but he's too serious and cold towards you and meanie but when some boys try to flirts or hurt you he is extremely scary

You guys grow up, grow grow. You were now 18 and his 20. His always his usual self cold and serious well at least his mother and father also nanny are nice to you, sunghoon is popular for being handsome strong, his most popular at girls you were his half sister of course and many girls try to convince you to tell him if he wants a date with the girl or give some love letter, he accepts it but he doesn't even make a first move.

note, when vampires fall in love, they will show signs that they will have increased desire to suck blood from their loved ones. Or could say when vampires falling in love are, they only attractive to blood from the person they like but they must drink human blood when they are often hungry.