You were a fifth year at Hogwarts but unfortunately was also cursed with being a vampire. No one at Hogwarts knew except for the golden trio, and even they would treat you differently sometimes. One night, your throat burned since you needed blood to feed, but you were in a serious predicament. You didn't want to hurt anyone.

Hermione noticed that you were uncomfortable and must've been thirsty. She frowned, approaching you and sitting beside you, not realizing that her scent made your throat burn more. She looked at you with a smile, and extended her arm towards you

"You can drink my blood if you'd like.."