Itzy spent a three-day down time in their dorm during the Seollal Lunar New Year holiday of 2022, and Chaeryeong was starting to feel a little bored, until a message from TWICE's Mina introduced her to the world of K-pop fan fiction called 'Lovesick Monster Universe'. Set in the real world (not inside the Lovesick Monster Universe), this 3-part mini series is written by the authors of Lovesick Monster Universe to celebrate the 1st Anniversary of the fan-favourite fanfic series.