From Gourmet Scans:
Drama Fanatic ‘Ryu Jae Rin’ enters the world of drama script! That too with the actor who played her favorite and the most beloved character, ‘Ian’. In order to survive here, she has to play the role of the female lead and the love interest with your favorite character..?! This is a survival romance between a popular actor and a die-hard fanatic!

Original Webtoon