DyE Fantasy

Fantasy is a song by DyE who is an electropop producer. The official video is the most messed up music video. In this video 4 teenagers break in to an indoor swimming pool. When all 4 are inside they change into swim clothes the young short haired girl and her boyfriend encouraged the long hair girl to make out with a boy to no avail while the long haired girl and the boy she was set up with were left alone the short haired girl and her boyfriend are possessed by some worm-like demonic alien creatures. The short haired girl's boyfriend had an extremely large worm arm up the short haired girl's vagina as the hand came out blood was splattered on the ground both had eyes rolled back and perverted facial expressions. The short haired girl ran to the boy the long haired girl was set up with her face contorts to a big mouthed creature with sharp teeth and bites the boy's penis while her boyfriend's head becomes work like the haired girl jumps in the pool and is goes in some alien world where she is incinerated at the end a giant creature is seen.

side note by creator I don't know the names of the teenagers. It's long since I seen it. Feel free to edit if you know their names.

Theory Since the song's name is Fantasy, it is possible that this is the long haired girl's nightmare or viewpoint of relationships/sex.