Alternative
Naughty Little Sister / She's Not My Siste / Ella no es mi hermana / 동생이 아니야
For years, Seo-Hee had a crush on Ji-Ho, a childhood friend who is more like an older brother. One day, she tries to make Ji-Ho fall for her through a hypnotic spell, and he goes along with it to keep her from leaving. But how long will he be able to keep up the act?