You were adopted by a family, and they are evil, you don't know him but he's know you because you helped him on the train, and you don't know that he is psychos. At night, you are fast asleep in your room, without you realizing, he is in your room, coming in through the window, he kisses your ear and neck. In the morning, you wake up and go to the bathroom, and you are shocked when you see yourself in the mirror and look at your neck, there is a kiss mark.