There is a room and a bed in the room, a window left side of the bed

There is a room and a bed in the room, a window left side of the bed, a 18 years girl in black hair white dress sitting on the window, a 18 years boy sitting in the bed, and the background wall is in yellow and painted some red butterfly over the wall, other wall of the room is seagreen color, they are smiling, and the time is night, the girl is actually dead but she came all way along to meet her friend for the last time,