help

hi guys so i need help finding this gl manhwa. i read it a while back and i cant find it.
so its about this girl whos in collage. idk which year but shes not a freshman. shes helping out with some short-film and she acts super nice but in reality shes a bitch, and she also likes filming sex tapes of herself. and like one of her junior's (who i vaugely remember her as being masc) calls her while shes masturbating and she acts nice to her but the moment she cuts the call the senior girl starts calling the junior names and shit.
idk what happens after that bc thats all ive read and i cant find it anywhere so if any of yall know what im talking about please please please lmk