A bit-part actor, Eunhee, has acting lessons at a studio in Seochon. One day, she comes across a Japanese writer named Ryohei who doesn’t know the way, so she helps him. Although she is not used to this place, she reliably finds his destination. Ryohei says he wants to buy her a cup of coffee in return for her help, and Eunhee accepts after putting off a date with her boyfriend, Hyeono. Eunhee sensitively reacts to her consistently changing desires, and actor Han Yeri connects Eunhee’s improvisation to the actor’s identity and focuses on using this as a main skill. Han lets Eunhee skillfully perform in the character’s reality, instead of not being able to do well as a professional actor. She gives boldness to Eunhee to handle power relationships with others by skillfully switching her sincerity and intention. And so, this puts a damper on the inpatient interpretation of Eunhee, who comes so close to being locked in the frame of a “bad woman.” The reason that the original title, Worst Woman has been changed to Worst Day (the Korean title) might be the result of the progressive spirit of Han Yeri, who developed Eunhee into a multifaceted character. [YEOM Eunyoung]